diff --git a/frontend/src/utils/themes.ts b/frontend/src/utils/themes.ts
index ea83abc..23d0be0 100644
--- a/frontend/src/utils/themes.ts
+++ b/frontend/src/utils/themes.ts
@@ -59,6 +59,7 @@ export const THEMES: Record<ThemeId, ThemePreset> = {
         docker:   { border: '#2496ED', icon: '#2496ED' },
         generic:  { border: '#8b949e', icon: '#8b949e' },
         groupRect:{ border: '#00d4ff', icon: '#00d4ff' },
+        group:    { border: '#00d4ff', icon: '#00d4ff' },
       },
       nodeCardBackground: '#21262d',
       nodeIconBackground: '#161b22',
@@ -113,6 +114,7 @@ export const THEMES: Record<ThemeId, ThemePreset> = {
         docker:   { border: '#2496ED', icon: '#2496ED' },
         generic:  { border: '#94a3b8', icon: '#94a3b8' },
         groupRect:{ border: '#22d3ee', icon: '#22d3ee' },
+        group:    { border: '#22d3ee', icon: '#22d3ee' },
       },
       nodeCardBackground: '#0a0a0a',
       nodeIconBackground: '#111111',
@@ -167,6 +169,7 @@ export const THEMES: Record<ThemeId, ThemePreset> = {
         docker:   { border: '#2496ED', icon: '#2496ED' },
         generic:  { border: '#6b7280', icon: '#6b7280' },
         groupRect:{ border: '#0284c7', icon: '#0284c7' },
+        group:    { border: '#0284c7', icon: '#0284c7' },
       },
       nodeCardBackground: '#ffffff',
       nodeIconBackground: '#f0f6ff',
@@ -221,6 +224,7 @@ export const THEMES: Record<ThemeId, ThemePreset> = {
         docker:   { border: '#00aaff', icon: '#00aaff' },
         generic:  { border: '#8888ff', icon: '#8888ff' },
         groupRect:{ border: '#00ffff', icon: '#00ffff' },
+        group:    { border: '#00ffff', icon: '#00ffff' },
       },
       nodeCardBackground: '#0f0f2a',
       nodeIconBackground: '#0a0a1a',
@@ -275,6 +279,7 @@ export const THEMES: Record<ThemeId, ThemePreset> = {
         docker:   { border: '#00cc88', icon: '#00cc88' },
         generic:  { border: '#006600', icon: '#006600' },
         groupRect:{ border: '#00ff41', icon: '#00ff41' },
+        group:    { border: '#00ff41', icon: '#00ff41' },
       },
       nodeCardBackground: '#001100',
       nodeIconBackground: '#002200',