personally just hate the MyColors system, and above all if all MyColors theme (even free) have WindowBlinds encrypted images, whatever quality are the skins, I just don't care because i can't do ports for my own use (and/or for others ...) and Stardock can keep them ...
This is a policy that is in the process of changing.
A little background first:
When we launched MyColors, the initial content came via licensed properties (NBA, NHL, NCAA, etc.) so we had to encrypt them to satisfy the IP holders. At the time, it was quicker to simply have MyColors only support this one format.
We've been working on making it so that MyColors themes can support unencrypted content as well but that's taking longer. So the plan going forward is to simply provide a ZIP file as part of your email (i.e. enter your email into the support.stardock.com website and it'll email you links to ZIP files as well as the MyColors themes).
Anyway, the intent with the encryption wasn't to prevent people from making ports but to protect licensed IP. But a lot of our best stuff is stuff we came up with and hence we can distribute however we choose.