diff --git a/distribution/openrct2.d.ts b/distribution/openrct2.d.ts
index 24b36a1244..a9bf7f0c80 100644
--- a/distribution/openrct2.d.ts
+++ b/distribution/openrct2.d.ts
@@ -4874,6 +4874,9 @@ declare global {
         frameBase: number;
         frameCount?: number;
         frameDuration?: number;
+        primaryColour?: number;
+        secondaryColour?: number;
+        tertiaryColour?: number;
         offset?: ScreenCoordsXY;
     }
 
diff --git a/src/openrct2-ui/scripting/CustomWindow.cpp b/src/openrct2-ui/scripting/CustomWindow.cpp
index c61a1ba233..53ea0a98a4 100644
--- a/src/openrct2-ui/scripting/CustomWindow.cpp
+++ b/src/openrct2-ui/scripting/CustomWindow.cpp
@@ -218,6 +218,21 @@ namespace OpenRCT2::Ui::Windows
                 result.imageFrameCount = AsOrDefault(dukImage["frameCount"], 0);
                 result.imageFrameDuration = AsOrDefault(dukImage["frameDuration"], 0);
 
+                if (dukImage["primaryColour"].type() == DukValue::Type::NUMBER)
+                {
+                    result.imageFrameBase = result.imageFrameBase.WithPrimary(dukImage["primaryColour"].as_uint());
+
+                    if (dukImage["secondaryColour"].type() == DukValue::Type::NUMBER)
+                    {
+                        result.imageFrameBase = result.imageFrameBase.WithSecondary(dukImage["secondaryColour"].as_uint());
+
+                        if (dukImage["tertiaryColour"].type() == DukValue::Type::NUMBER)
+                        {
+                            result.imageFrameBase = result.imageFrameBase.WithTertiary(dukImage["tertiaryColour"].as_uint());
+                        }
+                    }
+                }
+
                 auto dukCoord = dukImage["offset"];
                 if (dukCoord.type() == DukValue::Type::OBJECT)
                 {