fixed block label shadow rendering

src/blocks.js

@@ -4236,14 +4236,14 @@ BlockMorph.prototype.fixLabelColor = function () {
             this.setLabelColor(
                 new Color(255, 255, 255),
                 clr.darker(this.labelContrast),
-                MorphicPreferences.isFlat ? null : new Point(-1, -1)
+                MorphicPreferences.isFlat ? null : this.embossing
             );
         } else {
             this.setLabelColor(
                 new Color(0, 0, 0),
                 clr.lighter(this.zebraContrast)
                     .lighter(this.labelContrast * 2),
-                MorphicPreferences.isFlat ? null : new Point(1, 1)
+                MorphicPreferences.isFlat ? null : this.embossing.neg()
             );
         }
     }