I bought 2 CDTV keyboards the other day... 25$+p&p wasn't so bad... I sacrifised a A4000 keyboard together with one of the CDTV keyboard and made a black A4000 keyboard that goes great with my Mirage tower, black Wizzard mouse and modded black Sega megadrive joypad.
The other CDTV keyboard is for my A1200 project which when done will be black and then black keys is realy a nice touch.. I belive I saw such a work here on A.Org forums some time ago. :-D