diff --git a/www/js/interface.js b/www/js/interface.js
index 42266f3..75b618d 100644
--- a/www/js/interface.js
+++ b/www/js/interface.js
@@ -14,6 +14,7 @@ function INTERFACE_STYLE(id) {
             TileDark:   "#101010",
     
             Promote: "#a52121",
+            PromoteDark: "#7f1919",
     
             Dawn:        "#ffe082",
             DawnShade:   "#a59154",
@@ -811,7 +812,10 @@ const INTERFACE = {
                         ctx.rotate(Math.PI);
                     }
                     if(piece.promoted) {
-                        GAME_ASSET.Image.Promote.draw(ctx, 1.5 * gui_scale, [0, 0], INTERFACE.Color.Promote);
+                        let promote_color = INTERFACE.Color.Promote;
+                        console.log("ic " + is_check);
+                        if(is_check) { promote_color = INTERFACE.Color.PromoteDark; }
+                        GAME_ASSET.Image.Promote.draw(ctx, 1.5 * gui_scale, [0, 0], promote_color);
                     }
                     GAME_ASSET.Image[piece_def.name].draw(ctx, 1.5 * gui_scale, [0, 0], piece_color);
                 }