I've done the same myself, as I use Misa's texture pack as my base, so I adapted the XY blocks to suit. They look better, but it's still difficult to make them look really nice. http://forum.feed-the-beast.com/attachments/xy1-jpg.1073/When I first saw them I thought it would be a perfect way of getting rid of the 10s of 1000s of pointless, useless Xychoridite crystal thingies but they are UGLY. I play with Sphax and they are just so jarring in the world. They need Sphaxifying and then maybe they will look good. Not the mod or modders fault though.