I'll have a look on ebay for you tonight, think they were listed as blue dash bulbs can't say that they are all ways there though.
they are not hard to replace but there is a lot of them they just twist out.
Hi the only ones i can find tonight are not back light replacmentc but extra ones that go on the front dont know if these are any good
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=2435352806&category=28646
you could paint your bulbs with blue nail varnish.
Ok what you need to do is replace the standard dials with white lockwood dials then take out the bulbs behind them and buy a blue light tint, spray the bulbs and then the blue will reflect off the white dials. Dont bother with the dash.