diff --git a/d2graph/d2graph.go b/d2graph/d2graph.go
index 961ab0bcb..21562dbfe 100644
--- a/d2graph/d2graph.go
+++ b/d2graph/d2graph.go
@@ -330,6 +330,10 @@ func (l ContainerLevel) LabelSize() int {
 }
 
 func (obj *Object) GetFill(theme *d2themes.Theme) string {
+	if obj.Parent.IsSequenceDiagram() {
+		return theme.Colors.B5
+	}
+
 	level := int(obj.Level())
 	shape := obj.Attributes.Shape.Value
 
diff --git a/e2etests/testdata/stable/sequence_diagram_all_shapes/dagre/board.exp.json b/e2etests/testdata/stable/sequence_diagram_all_shapes/dagre/board.exp.json
index 49097965c..32da45631 100644
--- a/e2etests/testdata/stable/sequence_diagram_all_shapes/dagre/board.exp.json
+++ b/e2etests/testdata/stable/sequence_diagram_all_shapes/dagre/board.exp.json
@@ -14,7 +14,7 @@
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       "strokeWidth": 2,
       "borderRadius": 0,
-      "fill": "#FFFFFF",
+      "fill": "#EDF0FD",
       "stroke": "#0D32B2",
       "shadow": false,
       "3d": false,
@@ -53,7 +53,7 @@
       "strokeDash": 0,
       "strokeWidth": 2,
       "borderRadius": 0,
-      "fill": "#F7F8FE",
+      "fill": "#EDF0FD",
       "stroke": "#0D32B2",
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       "3d": false,
@@ -92,7 +92,7 @@
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       "strokeWidth": 2,
       "borderRadius": 0,
-      "fill": "#FFFFFF",
+      "fill": "#EDF0FD",
       "stroke": "#0A0F25",
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       "3d": false,
@@ -142,7 +142,7 @@
       "strokeDash": 0,
       "strokeWidth": 2,
       "borderRadius": 0,
-      "fill": "#FFFFFF",
+      "fill": "#EDF0FD",
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       "3d": false,
@@ -181,7 +181,7 @@
       "strokeDash": 0,
       "strokeWidth": 2,
       "borderRadius": 0,
-      "fill": "#FFFFFF",
+      "fill": "#EDF0FD",
       "stroke": "#0A0F25",
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       "3d": false,
@@ -259,7 +259,7 @@
       "strokeDash": 0,
       "strokeWidth": 2,
       "borderRadius": 0,
-      "fill": "#CFD2DD",
+      "fill": "#EDF0FD",
       "stroke": "#0D32B2",
       "shadow": false,
       "3d": false,
@@ -337,7 +337,7 @@
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       "strokeWidth": 2,
       "borderRadius": 0,
-      "fill": "#F0F3F9",
+      "fill": "#EDF0FD",
       "stroke": "#0D32B2",
       "shadow": false,
       "3d": false,
@@ -376,7 +376,7 @@
       "strokeDash": 0,
       "strokeWidth": 2,
       "borderRadius": 0,
-      "fill": "#FFFFFF",
+      "fill": "#EDF0FD",
       "stroke": "#0D32B2",
       "shadow": false,
       "3d": false,
@@ -426,7 +426,7 @@
       "strokeDash": 0,
       "strokeWidth": 2,
       "borderRadius": 0,
-      "fill": "#F7F8FE",
+      "fill": "#EDF0FD",
       "stroke": "#0D32B2",
       "shadow": false,
       "3d": false,
@@ -543,7 +543,7 @@
       "strokeDash": 0,
       "strokeWidth": 2,
       "borderRadius": 0,
-      "fill": "#F0F3F9",
+      "fill": "#EDF0FD",
       "stroke": "#0D32B2",
       "shadow": false,
       "3d": false,
@@ -582,7 +582,7 @@
       "strokeDash": 0,
       "strokeWidth": 2,
       "borderRadius": 0,
-      "fill": "#E3E9FD",
+      "fill": "#EDF0FD",
       "stroke": "#0D32B2",
       "shadow": false,
       "3d": false,
@@ -621,7 +621,7 @@
       "strokeDash": 0,
       "strokeWidth": 2,
       "borderRadius": 0,
-      "fill": "#F0F3F9",
+      "fill": "#EDF0FD",
       "stroke": "#0D32B2",
       "shadow": false,
       "3d": false,
@@ -660,7 +660,7 @@
       "strokeDash": 0,
       "strokeWidth": 2,
       "borderRadius": 0,
-      "fill": "#F7F8FE",
+      "fill": "#EDF0FD",
       "stroke": "#0D32B2",
       "shadow": false,
       "3d": false,
@@ -777,7 +777,7 @@
       "strokeDash": 0,
       "strokeWidth": 2,
       "borderRadius": 0,
-      "fill": "#FFFFFF",
+      "fill": "#EDF0FD",
       "stroke": "#0A0F25",
       "shadow": false,
       "3d": false,
diff --git a/e2etests/testdata/stable/sequence_diagram_all_shapes/dagre/sketch.exp.svg b/e2etests/testdata/stable/sequence_diagram_all_shapes/dagre/sketch.exp.svg
index 0428bcef4..ed4a6ea54 100644
--- a/e2etests/testdata/stable/sequence_diagram_all_shapes/dagre/sketch.exp.svg
+++ b/e2etests/testdata/stable/sequence_diagram_all_shapes/dagre/sketch.exp.svg
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index a99b8fa61..a0f022a65 100644
--- a/e2etests/testdata/stable/sequence_diagram_nested_span/elk/board.exp.json
+++ b/e2etests/testdata/stable/sequence_diagram_nested_span/elk/board.exp.json
@@ -14,7 +14,7 @@
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--- a/e2etests/testdata/stable/sequence_diagram_nested_span/elk/sketch.exp.svg
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diff --git a/e2etests/testdata/stable/sequence_diagram_note/dagre/board.exp.json b/e2etests/testdata/stable/sequence_diagram_note/dagre/board.exp.json
index f00b769be..f8d4cc2f0 100644
--- a/e2etests/testdata/stable/sequence_diagram_note/dagre/board.exp.json
+++ b/e2etests/testdata/stable/sequence_diagram_note/dagre/board.exp.json
@@ -14,7 +14,7 @@
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diff --git a/e2etests/testdata/stable/sequence_diagram_note/dagre/sketch.exp.svg b/e2etests/testdata/stable/sequence_diagram_note/dagre/sketch.exp.svg
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diff --git a/e2etests/testdata/stable/sequence_diagram_self_edges/dagre/board.exp.json b/e2etests/testdata/stable/sequence_diagram_self_edges/dagre/board.exp.json
index 7bb323ba1..5a65dbefb 100644
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diff --git a/e2etests/testdata/stable/sequence_diagram_self_edges/dagre/sketch.exp.svg b/e2etests/testdata/stable/sequence_diagram_self_edges/dagre/sketch.exp.svg
index fe2e24cb0..b04b259e8 100644
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diff --git a/e2etests/testdata/stable/sequence_diagram_self_edges/elk/board.exp.json b/e2etests/testdata/stable/sequence_diagram_self_edges/elk/board.exp.json
index 7bb323ba1..5a65dbefb 100644
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diff --git a/e2etests/testdata/stable/sequence_diagram_self_edges/elk/sketch.exp.svg b/e2etests/testdata/stable/sequence_diagram_self_edges/elk/sketch.exp.svg
index fe2e24cb0..b04b259e8 100644
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diff --git a/e2etests/testdata/stable/sequence_diagram_simple/dagre/board.exp.json b/e2etests/testdata/stable/sequence_diagram_simple/dagre/board.exp.json
index 1fd6bd83f..345f367a8 100644
--- a/e2etests/testdata/stable/sequence_diagram_simple/dagre/board.exp.json
+++ b/e2etests/testdata/stable/sequence_diagram_simple/dagre/board.exp.json
@@ -14,7 +14,7 @@
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-      "fill": "#E3E9FD",
+      "fill": "#EDF0FD",
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@@ -53,7 +53,7 @@
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+      "fill": "#EDF0FD",
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+      "fill": "#EDF0FD",
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diff --git a/e2etests/testdata/stable/sequence_diagram_simple/dagre/sketch.exp.svg b/e2etests/testdata/stable/sequence_diagram_simple/dagre/sketch.exp.svg
index 867f37b16..9b2acd3cf 100644
--- a/e2etests/testdata/stable/sequence_diagram_simple/dagre/sketch.exp.svg
+++ b/e2etests/testdata/stable/sequence_diagram_simple/dagre/sketch.exp.svg
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bob)[0]"><marker id="mk-3990223579" markerWidth="10.000000" markerHeight="12.000000" refX="7.000000" refY="6.000000" viewBox="0.000000 0.000000 10.000000 12.000000" orient="auto" markerUnits="userSpaceOnUse"> <polygon class="connection" fill="#0D32B2" stroke-width="2" points="0.000000,0.000000 10.000000,6.000000 0.000000,12.000000" /> </marker><path d="M 83.500000 418.000000 L 549.500000 418.000000" class="connection" style="fill:none;stroke:#0D32B2;opacity:1.000000;stroke-width:2;" marker-end="url(#mk-3990223579)" mask="url(#labels)"/><text class="text-italic" x="318.500000" y="424.000000" style="text-anchor:middle;font-size:16px;fill:#676C7E">Authentication Request</text></g><g id="(bob -&gt; service)[0]"><path d="M 558.500000 548.000000 L 1978.000000 548.000000" class="connection" style="fill:none;stroke:#0D32B2;opacity:1.000000;stroke-width:2;" marker-end="url(#mk-3990223579)" mask="url(#labels)"/><text class="text-italic" x="1268.500000" y="554.000000" style="text-anchor:middle;font-size:16px;fill:#676C7E">make request for something that is quite far away and requires a really long label to take all the space between the objects</text></g><g id="(service -&gt; 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bob)[0]"><marker id="mk-3990223579" markerWidth="10.000000" markerHeight="12.000000" refX="7.000000" refY="6.000000" viewBox="0.000000 0.000000 10.000000 12.000000" orient="auto" markerUnits="userSpaceOnUse"> <polygon class="connection" fill="#0D32B2" stroke-width="2" points="0.000000,0.000000 10.000000,6.000000 0.000000,12.000000" /> </marker><path d="M 83.500000 418.000000 L 549.500000 418.000000" class="connection" style="fill:none;stroke:#0D32B2;opacity:1.000000;stroke-width:2;" marker-end="url(#mk-3990223579)" mask="url(#labels)"/><text class="text-italic" x="318.500000" y="424.000000" style="text-anchor:middle;font-size:16px;fill:#676C7E">Authentication Request</text></g><g id="(bob -&gt; service)[0]"><path d="M 558.500000 548.000000 L 1978.000000 548.000000" class="connection" style="fill:none;stroke:#0D32B2;opacity:1.000000;stroke-width:2;" marker-end="url(#mk-3990223579)" mask="url(#labels)"/><text class="text-italic" x="1268.500000" y="554.000000" style="text-anchor:middle;font-size:16px;fill:#676C7E">make request for something that is quite far away and requires a really long label to take all the space between the objects</text></g><g id="(service -&gt; db)[0]"><path d="M 1980.000000 678.000000 L 1026.000000 678.000000" class="connection" style="fill:none;stroke:#0D32B2;opacity:1.000000;stroke-width:2;" marker-end="url(#mk-3990223579)" mask="url(#labels)"/><text class="text-italic" x="1502.500000" y="684.000000" style="text-anchor:middle;font-size:16px;fill:#676C7E">validate credentials</text></g><g id="(db -&gt; service)[0]"><path d="M 1024.000000 808.000000 L 1978.000000 808.000000" class="connection" style="fill:none;stroke:#0D32B2;opacity:1.000000;stroke-width:2;stroke-dasharray:8.000000,7.892511;" marker-end="url(#mk-3990223579)" mask="url(#labels)"/></g><g id="(service -&gt; bob)[0]"><path d="M 1980.000000 938.000000 L 560.500000 938.000000" class="connection" style="fill:none;stroke:#0D32B2;opacity:1.000000;stroke-width:2;stroke-dasharray:8.000000,7.892511;" marker-end="url(#mk-3990223579)" mask="url(#labels)"/></g><g id="(bob -&gt; alice)[0]"><path d="M 551.500000 1068.000000 L 85.500000 1068.000000" class="connection" style="fill:none;stroke:#0D32B2;opacity:1.000000;stroke-width:2;" marker-end="url(#mk-3990223579)" mask="url(#labels)"/><text class="text-italic" x="318.000000" y="1074.000000" style="text-anchor:middle;font-size:16px;fill:#676C7E">Authentication Response</text></g><g id="(alice -&gt; bob)[1]"><path d="M 83.500000 1198.000000 L 549.500000 1198.000000" class="connection" style="fill:none;stroke:#0D32B2;opacity:1.000000;stroke-width:2;" marker-end="url(#mk-3990223579)" mask="url(#labels)"/><text class="text-italic" x="318.000000" y="1204.000000" style="text-anchor:middle;font-size:16px;fill:#676C7E">Another authentication Request</text></g><g id="(bob -&gt; queue)[0]"><path d="M 558.500000 1328.000000 L 1485.000000 1328.000000" class="connection" style="fill:none;stroke:#0D32B2;opacity:1.000000;stroke-width:2;" marker-end="url(#mk-3990223579)" mask="url(#labels)"/><text class="text-italic" x="1022.500000" y="1334.000000" style="text-anchor:middle;font-size:16px;fill:#676C7E">do it later</text></g><g id="(queue -&gt; bob)[0]"><marker id="mk-1225746125" markerWidth="25.000000" markerHeight="30.000000" refX="17.500000" refY="15.000000" viewBox="0.000000 0.000000 25.000000 30.000000" orient="auto" markerUnits="userSpaceOnUse"> <polygon class="connection" fill="green" stroke-width="5" points="0.000000,0.000000 25.000000,15.000000 0.000000,30.000000" /> </marker><path d="M 1485.500000 1458.000000 L 565.000000 1458.000000" class="connection" style="fill:none;stroke:green;opacity:1.000000;stroke-width:5;stroke-dasharray:15.000000,14.106102;" marker-end="url(#mk-1225746125)" mask="url(#labels)"/><text class="text-italic" x="1022.000000" y="1464.000000" style="text-anchor:middle;font-size:16px;fill:#676C7E">stored</text></g><g id="(bob -&gt; 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diff --git a/e2etests/testdata/stable/sequence_diagram_simple/elk/board.exp.json b/e2etests/testdata/stable/sequence_diagram_simple/elk/board.exp.json
index 1fd6bd83f..345f367a8 100644
--- a/e2etests/testdata/stable/sequence_diagram_simple/elk/board.exp.json
+++ b/e2etests/testdata/stable/sequence_diagram_simple/elk/board.exp.json
@@ -14,7 +14,7 @@
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+      "fill": "#EDF0FD",
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@@ -53,7 +53,7 @@
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-      "fill": "#F7F8FE",
+      "fill": "#EDF0FD",
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       "shadow": false,
       "3d": false,
diff --git a/e2etests/testdata/stable/sequence_diagram_simple/elk/sketch.exp.svg b/e2etests/testdata/stable/sequence_diagram_simple/elk/sketch.exp.svg
index 867f37b16..9b2acd3cf 100644
--- a/e2etests/testdata/stable/sequence_diagram_simple/elk/sketch.exp.svg
+++ b/e2etests/testdata/stable/sequence_diagram_simple/elk/sketch.exp.svg
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bob)[0]"><marker id="mk-3990223579" markerWidth="10.000000" markerHeight="12.000000" refX="7.000000" refY="6.000000" viewBox="0.000000 0.000000 10.000000 12.000000" orient="auto" markerUnits="userSpaceOnUse"> <polygon class="connection" fill="#0D32B2" stroke-width="2" points="0.000000,0.000000 10.000000,6.000000 0.000000,12.000000" /> </marker><path d="M 83.500000 418.000000 L 549.500000 418.000000" class="connection" style="fill:none;stroke:#0D32B2;opacity:1.000000;stroke-width:2;" marker-end="url(#mk-3990223579)" mask="url(#labels)"/><text class="text-italic" x="318.500000" y="424.000000" style="text-anchor:middle;font-size:16px;fill:#676C7E">Authentication Request</text></g><g id="(bob -&gt; service)[0]"><path d="M 558.500000 548.000000 L 1978.000000 548.000000" class="connection" style="fill:none;stroke:#0D32B2;opacity:1.000000;stroke-width:2;" marker-end="url(#mk-3990223579)" mask="url(#labels)"/><text class="text-italic" x="1268.500000" y="554.000000" style="text-anchor:middle;font-size:16px;fill:#676C7E">make request for something that is quite far away and requires a really long label to take all the space between the objects</text></g><g id="(service -&gt; 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bob)[0]"><marker id="mk-3990223579" markerWidth="10.000000" markerHeight="12.000000" refX="7.000000" refY="6.000000" viewBox="0.000000 0.000000 10.000000 12.000000" orient="auto" markerUnits="userSpaceOnUse"> <polygon class="connection" fill="#0D32B2" stroke-width="2" points="0.000000,0.000000 10.000000,6.000000 0.000000,12.000000" /> </marker><path d="M 83.500000 418.000000 L 549.500000 418.000000" class="connection" style="fill:none;stroke:#0D32B2;opacity:1.000000;stroke-width:2;" marker-end="url(#mk-3990223579)" mask="url(#labels)"/><text class="text-italic" x="318.500000" y="424.000000" style="text-anchor:middle;font-size:16px;fill:#676C7E">Authentication Request</text></g><g id="(bob -&gt; service)[0]"><path d="M 558.500000 548.000000 L 1978.000000 548.000000" class="connection" style="fill:none;stroke:#0D32B2;opacity:1.000000;stroke-width:2;" marker-end="url(#mk-3990223579)" mask="url(#labels)"/><text class="text-italic" x="1268.500000" y="554.000000" style="text-anchor:middle;font-size:16px;fill:#676C7E">make request for something that is quite far away and requires a really long label to take all the space between the objects</text></g><g id="(service -&gt; 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diff --git a/e2etests/testdata/stable/sequence_diagram_span/dagre/board.exp.json b/e2etests/testdata/stable/sequence_diagram_span/dagre/board.exp.json
index 6d2c55f61..70fce0949 100644
--- a/e2etests/testdata/stable/sequence_diagram_span/dagre/board.exp.json
+++ b/e2etests/testdata/stable/sequence_diagram_span/dagre/board.exp.json
@@ -14,7 +14,7 @@
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diff --git a/e2etests/testdata/stable/sequence_diagram_span/dagre/sketch.exp.svg b/e2etests/testdata/stable/sequence_diagram_span/dagre/sketch.exp.svg
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diff --git a/e2etests/testdata/stable/sequence_diagram_span/elk/board.exp.json b/e2etests/testdata/stable/sequence_diagram_span/elk/board.exp.json
index 6d2c55f61..70fce0949 100644
--- a/e2etests/testdata/stable/sequence_diagram_span/elk/board.exp.json
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