I made a skinner tool for B2B/Entraction skins.
Check out more info and screenshots from here:
I've tested it on WinXP and with 3 different skins. It's quite primitive but hopefully easy to use.
It modifies the client's ext-resources.jar file. Can also change text colors by changing the branding file.
I've collected the table and card images mostly from this forum. I'd happily give credit but don't know the authors. If someone wants his work removed, let me know.