This is not compatible with all roms so like always backup prior to flashing.
I uninstalled my current market via titanium and flashed. Looks great. Thunderbolt is third link in the op for those who don't like to read
Updated 8/5
Check out this thread http://rootzwiki.com/showthread.php?1582-(UPDATED)-New-Market-INVERTED-v3.0.26-and-3.0.27
Working and different color schemes
If that doesn't work for you here is another themed market, I believe this one will show up in the app drawer as "Black Market"