Index: work/gtk/layersel/layersel.c
===================================================================
--- work/gtk/layersel/layersel.c	(revision 8500)
+++ work/gtk/layersel/layersel.c	(revision 8501)
@@ -96,7 +96,7 @@
 			else if ((width-w+5 < height) || (filled))
 				set_pixel(p, r, g, b, 0xff); /* layer color fill (full or up-left triangle) */
 			else
-				set_pixel(p, 0xff, 0xff, 0xff, 0xff); /* the unfilled part when triangle */
+				set_pixel(p, 0xff, 0xff, 0xff, 0x0); /* the unfilled part when triangle should be transparent */
 			p += 4;
 		}
 		pixels += gdk_pixbuf_get_rowstride(pixbuf);