Thanks All done in Photoshop. I've just updated the pic source, I found some more screengrabs of the original ident and realised I'd made the colours too vibrant, and a couple of the angles were a bit off so I've corrected those as well.
Also the coloured blocks could benefit from a bit of a 'sheen' effect, rather than solid colour - although to be fair the cake did vary over the years, and early incarnations were a bit more basic.
What you should have done is made an inner bevel to about 5px edge width to add the shine effect ((Sorry to dig up old threads))
There was a bevel but it doesn't really show up now that I've reduced the overall size of the image. I also later found out that Spencer was right - the font used on screen wasn't bold, but I can't find the regular version anywhere (even to buy).