When I bought a black K-r, I later regretted not getting a fun colour. I now also have a yellow K-01
The yellow looks much better in person than it does on photos btw, so check it out at a store. When I shoot with the K-01 I generally get less strange looks than when I shoot with the K-r (K-r looks more pro, kind of threatening to non-photographers), but I get more strange looks from photographers. When I was on vacation with the K-01 some old man with a white beard and a huge Nikon DSLR with a huge lens on it was looking at my camera as if I came from another planet. Is that good or bad? Who cares, I like the yellow