diff --git a/src/vehicle_gui.cpp b/src/vehicle_gui.cpp
--- a/src/vehicle_gui.cpp
+++ b/src/vehicle_gui.cpp
@@ -624,7 +624,7 @@ static void DrawVehicleRefitWindow(const
 	bool rtl = _current_text_dir == TD_RTL;
 	uint iconwidth = std::max(GetSpriteSize(SPR_CIRCLE_FOLDED).width, GetSpriteSize(SPR_CIRCLE_UNFOLDED).width);
 	uint iconheight = GetSpriteSize(SPR_CIRCLE_FOLDED).height;
-	int linecolour = _colour_gradient[COLOUR_ORANGE][4];
+	int linecolour = GetColourGradient(COLOUR_ORANGE, 4);
 
 	int iconleft   = rtl ? ir.right - iconwidth     : ir.left;
 	int iconcenter = rtl ? ir.right - iconwidth / 2 : ir.left + iconwidth / 2;