Better but not much. I don't know what was the right color, but even platinum doesn't make the system look real good. all the last gen systems weren't good looking. Maybe it was a problem of shape. For me all I ever did was look at the GC, I never looked at it and said man thats good lookin'. Maybe that's lame though, certainly a super low priority.
I own a platinum GC, and while it isn't as lame as the default purple GC was, it still kinda sucks. I think Nintendo realized purple wasn't the best color, and then they came out with the Platinum as the new default color, but by then it was too late and the damage was done. My only beef with the platinum GC is that it gives it a flimsy fake metallic look to it. You are instantly aware that it is a cheap plastic shell (which it is, as all consoles are), but the transparent attempt to make it seem metallic just makes it look even cheaper, imho.
It is still better than purple, but I think insanolord might have been onto something with his Orange color suggestion... Orange is a pretty bold and wild color, and I could have gotten behind that. But I'm not sure if everyone could. Like I said, white and black are the most logical choices because fewer people are likely to be offended by them. If you look back through the history of consoles, you'd see the vast majority were either white, black, or some variation of the two:
16bit era = Black Genesis versus greyish Super Nintendo
32bit era = Black Saturn and Black N64 versus Greyish Playstation
128bit era = White Dreamcast versus Black PS2, Black Xbox, and Purple GC
And now we have the White Wii up against the black PS3 and the Whiteish 360. So you see, throughout this history the GC stands out as being the only system to be colorful by default. It is worth noting that the GC was also Nintendo's least popular console. Is that a coincidence?
But Nintendo really seems to have learned their lesson, and the Wii is probably the most aesthetically pleasing console out right now. So maybe one could present the argument that the most attractive console wins, and the least attractive looking console always loses...