diff --git a/src/train_gui.cpp b/src/train_gui.cpp
--- a/src/train_gui.cpp
+++ b/src/train_gui.cpp
@@ -76,7 +76,7 @@ static int HighlightDragPosition(int px,
 		int top = y - height / 2;
 		Rect r = {drag_hlight_left, top, drag_hlight_right, top + height - 1};
 		/* Sprite-scaling is used here as the area is from sprite size */
-		GfxFillRect(r.Shrink(ScaleSpriteTrad(1)), _colour_gradient[COLOUR_GREY][7]);
+		GfxFillRect(r.Shrink(ScaleSpriteTrad(1)), GetColourGradient(COLOUR_GREY, 7));
 	}
 
 	return drag_hlight_width;
@@ -399,7 +399,7 @@ void DrawTrainDetails(const Train *v, co
 				if (vscroll_pos <= 0 && vscroll_pos > -vscroll_cap) {
 					int py = r.top - line_height * vscroll_pos + text_y_offset;
 					if (i > 0 || separate_sprite_row) {
-						if (vscroll_pos != 0) GfxFillRect(r.left, py - WidgetDimensions::scaled.matrix.top - 1, r.right, py - WidgetDimensions::scaled.matrix.top, _colour_gradient[COLOUR_GREY][5]);
+						if (vscroll_pos != 0) GfxFillRect(r.left, py - WidgetDimensions::scaled.matrix.top - 1, r.right, py - WidgetDimensions::scaled.matrix.top, GetColourGradient(COLOUR_GREY, 5));
 					}
 					switch (det_tab) {
 						case TDW_TAB_CARGO: