Sounds thumbnail Weirdness

Above, is a sample of a thumbnail generated when uploading a sound.  I use a dark skin on the sounds player, hence the dark image background.  I use two different dark sound player skins... one I bought in the market, and one of my own design.  The generated thumbnail in both cases, has the same problem, and that is the white border on the top and left sides of the image.   As far as I can tell, the thumb is created using the imagecreatetruecolor function.  I can't figure out where these borders are coming from, but on dark backgrounds, it's butt ugly.   I assume these border are there when using the default skin, they just happen to match the background.

Can this please be fixed so that the thumbnail is created with no borders whatsoever?  There is nothing white in my sounds player skin, so I know it's not coming from there.... or am I missing something?