I don't currently have RA2 installed, but I still have some of my files. In addition to the disc skin I intended to release months ago, I decided to whip up a new one as well.
This first is a disc I made for an old bot of mine called Sucka Punch. It looks like this:
The second is a Yin Yang. I have no in-game shots, but it should look like this:
These are skins only. I have not created a new component file to go with them. If you have any requests, I may be able to help.
If I ever get around to reinstalling the game, I'll might actually take the time to put out a larger disc pack with individual components. In the meantime, enjoy.