there also 2 black ones unbranded on ebay (they have a space for provider sticker) and identical in shape to rogers or cingular housing. personally i would stay i away from them as plastic is probably cheaper.
example:
eBay.ca: ORIGINAL BlackBerry 8700r 8700 Housing Faceplate Cover (item 200042863632 end time 05-Nov-06 21:48:31 EST)
a lot cheaper tho and notice the black keys on the frame, RIM used these before they released the device.