diff --git a/src/internals/irDump.ts b/src/internals/irDump.ts
index 21abbf6d..2fc558ff 100644
--- a/src/internals/irDump.ts
+++ b/src/internals/irDump.ts
@@ -76,7 +76,9 @@ export class GraphvizDumper {
       output += `        color=lightgrey;\n`;
     }
     cfg.forEachNode(cu.ast, (stmt, node) => {
-      output += `        "${prefix}_${node.idx}" [label="${this.ppSummary(stmt)}"];\n`;
+      const color =
+        node.kind.kind === "return" ? ',style=filled,fillcolor="#66A7DB"' : "";
+      output += `        "${prefix}_${node.idx}" [label="${this.ppSummary(stmt)}"${color}];\n`;
     });
     cfg.forEachEdge((edge) => {
       output += `        "${prefix}_${edge.src}" -> "${prefix}_${edge.dst}";\n`;
diff --git a/test/contracts/conditional-1.cfg.dot b/test/contracts/conditional-1.cfg.dot
index 6726e022..7ddaec1e 100644
--- a/test/contracts/conditional-1.cfg.dot
+++ b/test/contracts/conditional-1.cfg.dot
@@ -6,7 +6,7 @@ digraph "conditional-1" {
         "test_142" [label="if (a > 42)"];
         "test_144" [label="a = 23"];
         "test_146" [label="let b: Int = a + 1"];
-        "test_148" [label="return b"];
+        "test_148" [label="return b",style=filled,fillcolor="#66A7DB"];
         "test_141" -> "test_142";
         "test_142" -> "test_144";
         "test_144" -> "test_146";
diff --git a/test/contracts/conditional-2.cfg.dot b/test/contracts/conditional-2.cfg.dot
index c0ea57f3..706774eb 100644
--- a/test/contracts/conditional-2.cfg.dot
+++ b/test/contracts/conditional-2.cfg.dot
@@ -6,7 +6,7 @@ digraph "conditional-2" {
         "test_142" [label="if (a > 42)"];
         "test_144" [label="a = 23"];
         "test_146" [label="a = 22"];
-        "test_148" [label="return a"];
+        "test_148" [label="return a",style=filled,fillcolor="#66A7DB"];
         "test_141" -> "test_142";
         "test_142" -> "test_144";
         "test_142" -> "test_146";
diff --git a/test/contracts/div-before-mul-1.cfg.dot b/test/contracts/div-before-mul-1.cfg.dot
index 2ed28411..04f1e1cf 100644
--- a/test/contracts/div-before-mul-1.cfg.dot
+++ b/test/contracts/div-before-mul-1.cfg.dot
@@ -6,7 +6,7 @@ digraph "div-before-mul-1" {
         "test_142" [label="let b: Int = 3"];
         "test_144" [label="let c: Int = 2"];
         "test_146" [label="let result: Int = a / b * c"];
-        "test_148" [label="return result"];
+        "test_148" [label="return result",style=filled,fillcolor="#66A7DB"];
         "test_141" -> "test_142";
         "test_142" -> "test_144";
         "test_144" -> "test_146";
diff --git a/test/contracts/div-before-mul-2.cfg.dot b/test/contracts/div-before-mul-2.cfg.dot
index 9b5b53ed..d65ad31d 100644
--- a/test/contracts/div-before-mul-2.cfg.dot
+++ b/test/contracts/div-before-mul-2.cfg.dot
@@ -6,7 +6,7 @@ digraph "div-before-mul-2" {
         "test_142" [label="let b: Int = 3"];
         "test_144" [label="let c: Int = 2"];
         "test_146" [label="let result: Int = a * c / b"];
-        "test_148" [label="return result"];
+        "test_148" [label="return result",style=filled,fillcolor="#66A7DB"];
         "test_141" -> "test_142";
         "test_142" -> "test_144";
         "test_144" -> "test_146";
diff --git a/test/contracts/div-before-mul-3.cfg.dot b/test/contracts/div-before-mul-3.cfg.dot
index 05dd1673..b28e17eb 100644
--- a/test/contracts/div-before-mul-3.cfg.dot
+++ b/test/contracts/div-before-mul-3.cfg.dot
@@ -7,7 +7,7 @@ digraph "div-before-mul-3" {
         "test_144" [label="let taintedWithA1: Int = 2 - a"];
         "test_146" [label="let taintedWithA2: Int = 55 + taintedWithA1"];
         "test_148" [label="let result: Int = taintedWithA2 * c"];
-        "test_150" [label="return result"];
+        "test_150" [label="return result",style=filled,fillcolor="#66A7DB"];
         "test_141" -> "test_142";
         "test_142" -> "test_144";
         "test_144" -> "test_146";
diff --git a/test/contracts/linear-flow-1.cfg.dot b/test/contracts/linear-flow-1.cfg.dot
index 27916767..a99c3706 100644
--- a/test/contracts/linear-flow-1.cfg.dot
+++ b/test/contracts/linear-flow-1.cfg.dot
@@ -5,7 +5,7 @@ digraph "linear-flow-1" {
         "test_141" [label="let a: Int = 20"];
         "test_142" [label="let b: Int = 22"];
         "test_144" [label="let c: Int = a + b"];
-        "test_146" [label="return c"];
+        "test_146" [label="return c",style=filled,fillcolor="#66A7DB"];
         "test_141" -> "test_142";
         "test_142" -> "test_144";
         "test_144" -> "test_146";
diff --git a/test/contracts/loops-1.cfg.dot b/test/contracts/loops-1.cfg.dot
index b1d0dc07..4f0f8325 100644
--- a/test/contracts/loops-1.cfg.dot
+++ b/test/contracts/loops-1.cfg.dot
@@ -7,7 +7,7 @@ digraph "loops-1" {
         "test_144" [label="while (i < 10)"];
         "test_146" [label="i = i + 1"];
         "test_148" [label="sum = sum + i"];
-        "test_151" [label="return sum"];
+        "test_151" [label="return sum",style=filled,fillcolor="#66A7DB"];
         "test_141" -> "test_142";
         "test_142" -> "test_144";
         "test_144" -> "test_146";
diff --git a/test/contracts/loops-2.cfg.dot b/test/contracts/loops-2.cfg.dot
index 6207a671..59b53eba 100644
--- a/test/contracts/loops-2.cfg.dot
+++ b/test/contracts/loops-2.cfg.dot
@@ -7,7 +7,7 @@ digraph "loops-2" {
         "test_144" [label="until (i < 10)"];
         "test_146" [label="i = i + 1"];
         "test_148" [label="sum = sum + i"];
-        "test_151" [label="return sum"];
+        "test_151" [label="return sum",style=filled,fillcolor="#66A7DB"];
         "test_141" -> "test_142";
         "test_142" -> "test_144";
         "test_144" -> "test_146";
diff --git a/test/contracts/loops-3.cfg.dot b/test/contracts/loops-3.cfg.dot
index a9390a88..dca7f94f 100644
--- a/test/contracts/loops-3.cfg.dot
+++ b/test/contracts/loops-3.cfg.dot
@@ -7,7 +7,7 @@ digraph "loops-3" {
         "test_144" [label="repeat (10)"];
         "test_146" [label="i = i + 1"];
         "test_148" [label="sum = sum + i"];
-        "test_151" [label="return sum"];
+        "test_151" [label="return sum",style=filled,fillcolor="#66A7DB"];
         "test_141" -> "test_142";
         "test_142" -> "test_144";
         "test_144" -> "test_146";
diff --git a/test/contracts/never-accessed-1.cfg.dot b/test/contracts/never-accessed-1.cfg.dot
index d87578aa..2b43fd73 100644
--- a/test/contracts/never-accessed-1.cfg.dot
+++ b/test/contracts/never-accessed-1.cfg.dot
@@ -5,7 +5,7 @@ digraph "never-accessed-1" {
         "test_141" [label="let a: Int = 20"];
         "test_142" [label="if (true)"];
         "test_144" [label="a = 42"];
-        "test_146" [label="return 42"];
+        "test_146" [label="return 42",style=filled,fillcolor="#66A7DB"];
         "test_141" -> "test_142";
         "test_142" -> "test_144";
         "test_144" -> "test_146";
diff --git a/test/contracts/never-accessed-2.cfg.dot b/test/contracts/never-accessed-2.cfg.dot
index b42d1eda..7ec95662 100644
--- a/test/contracts/never-accessed-2.cfg.dot
+++ b/test/contracts/never-accessed-2.cfg.dot
@@ -6,6 +6,6 @@ digraph "never-accessed-2" {
     }
     subgraph "cluster_FieldTest__use_f1" {
         label="FieldTest__use_f1";
-        "FieldTest__use_f1_143" [label="return self.f1"];
+        "FieldTest__use_f1_143" [label="return self.f1",style=filled,fillcolor="#66A7DB"];
     }
 }
diff --git a/test/contracts/readonly-1.cfg.dot b/test/contracts/readonly-1.cfg.dot
index 396d8237..d3dc3254 100644
--- a/test/contracts/readonly-1.cfg.dot
+++ b/test/contracts/readonly-1.cfg.dot
@@ -7,7 +7,7 @@ digraph "readonly-1" {
         "test_144" [label="let c: Int = 24"];
         "test_146" [label="if (true)"];
         "test_148" [label="c = a + b"];
-        "test_150" [label="return c"];
+        "test_150" [label="return c",style=filled,fillcolor="#66A7DB"];
         "test_141" -> "test_142";
         "test_142" -> "test_144";
         "test_144" -> "test_146";
diff --git a/test/contracts/readonly-2.cfg.dot b/test/contracts/readonly-2.cfg.dot
index 4e252bf6..eb497122 100644
--- a/test/contracts/readonly-2.cfg.dot
+++ b/test/contracts/readonly-2.cfg.dot
@@ -4,7 +4,7 @@ digraph "readonly-2" {
         label="test1";
         "test1_141" [label="let a: Int = 20"];
         "test1_142" [label="let b: Int = 22"];
-        "test1_144" [label="return b"];
+        "test1_144" [label="return b",style=filled,fillcolor="#66A7DB"];
         "test1_141" -> "test1_142";
         "test1_142" -> "test1_144";
     }
diff --git a/test/contracts/traits-1.cfg.dot b/test/contracts/traits-1.cfg.dot
index 73c0b3fb..8f4eae78 100644
--- a/test/contracts/traits-1.cfg.dot
+++ b/test/contracts/traits-1.cfg.dot
@@ -2,6 +2,6 @@ digraph "traits-1" {
     node [shape=box];
     subgraph "cluster_TestContract__getter" {
         label="TestContract__getter";
-        "TestContract__getter_141" [label="return 0"];
+        "TestContract__getter_141" [label="return 0",style=filled,fillcolor="#66A7DB"];
     }
 }
diff --git a/test/contracts/unbound-loop-1.cfg.dot b/test/contracts/unbound-loop-1.cfg.dot
index 0ae5274e..b68e7797 100644
--- a/test/contracts/unbound-loop-1.cfg.dot
+++ b/test/contracts/unbound-loop-1.cfg.dot
@@ -4,7 +4,7 @@ digraph "unbound-loop-1" {
         label="test";
         "test_141" [label="let a: Int = 20"];
         "test_142" [label="while (a > 10)"];
-        "test_145" [label="return a"];
+        "test_145" [label="return a",style=filled,fillcolor="#66A7DB"];
         "test_141" -> "test_142";
         "test_142" -> "test_142";
         "test_142" -> "test_145";
diff --git a/test/contracts/unbound-loop-2.cfg.dot b/test/contracts/unbound-loop-2.cfg.dot
index 6b086bb9..e66a91db 100644
--- a/test/contracts/unbound-loop-2.cfg.dot
+++ b/test/contracts/unbound-loop-2.cfg.dot
@@ -4,7 +4,7 @@ digraph "unbound-loop-2" {
         label="test";
         "test_141" [label="let a: Int = 20"];
         "test_142" [label="until (a > 10)"];
-        "test_145" [label="return a"];
+        "test_145" [label="return a",style=filled,fillcolor="#66A7DB"];
         "test_141" -> "test_142";
         "test_142" -> "test_142";
         "test_142" -> "test_145";
diff --git a/test/contracts/unbound-loop-3.cfg.dot b/test/contracts/unbound-loop-3.cfg.dot
index 6eb3e166..34e98202 100644
--- a/test/contracts/unbound-loop-3.cfg.dot
+++ b/test/contracts/unbound-loop-3.cfg.dot
@@ -5,7 +5,7 @@ digraph "unbound-loop-3" {
         "test_141" [label="let a: Int = 20"];
         "test_142" [label="while (a > 10)"];
         "test_144" [label="a += 1"];
-        "test_147" [label="return a"];
+        "test_147" [label="return a",style=filled,fillcolor="#66A7DB"];
         "test_141" -> "test_142";
         "test_142" -> "test_144";
         "test_144" -> "test_142";
diff --git a/test/contracts/unbound-loop-4.cfg.dot b/test/contracts/unbound-loop-4.cfg.dot
index 81ce9775..04d3ebd1 100644
--- a/test/contracts/unbound-loop-4.cfg.dot
+++ b/test/contracts/unbound-loop-4.cfg.dot
@@ -8,7 +8,7 @@ digraph "unbound-loop-4" {
         "test_142" [label="let a: Int = 20"];
         "test_143" [label="while (a > 10)"];
         "test_145" [label="fn(a)"];
-        "test_148" [label="return a"];
+        "test_148" [label="return a",style=filled,fillcolor="#66A7DB"];
         "test_142" -> "test_143";
         "test_143" -> "test_145";
         "test_145" -> "test_143";