Windows 7 - Magenta/Alpha Problem with custom Clock

Hi,

so i've been trying to add a skin to the windows 7 default clock gadget and successfully added it.

But despite my efforts, i cannot get the alpha channel to work correctly.
I really don't get it.

Am i missing a setting? Because the other skins also have PNGs for "h" "m" and "s" and they seem to work just fine

I crawled through JS and HTML files but so far i found no extra setting that'll fix that and i don't know much about JS since i don't use it.

Here you see the photoshopped clock on the left, and how it appears on the desktop.. i added the "TRON" just to see if the background alpha works.

Can anyone please help me out?