Who cares if it's colorful looking? Wow? Who cares?
Sorry, but I couldn't disagree more. *I* care. Style, properly done, aids content and function. It builds heuristic connections. It's not perfect, but taking a closer look at the new interface, the color choices immediately snapped my attention to content. Little things, like the waveform clipping functions in the timeline, are IMMENSELY useful without having spent minute one with the software.
Sure, FCP works, but it works mainly because 1) we've learned to forgive its bugs, and 2) we've simply gotten used to it. But it's old, it LOOKS old. I'm a filmmaker in 2011 and I'm tired of making excuses for an interface that was state of the art for 1999. Design matters. Adobe realizes that - that's why they've got a great looking product now, which bears little resemblance to the product I was using from them way back in, oh, 2001. And Apple's getting that as well.
This stuff matters. Not as much as stability and speed, of course, but our modern interfaces should have as much care and thought put into them as, say, the typesetting of a book. We're past the point where things should look cobbled together because that's the only way to access functionality. Things should look as sharp as they work. I want stability, AND speed, AND design. I want it all.
Now, if that style gets in the way, that's one thing. But I see a lot of people attacking the fact that Apple's decided to stretch and attempt to embrace a modern sensibility. I don't know if it'll all work yet. But I applaud Apple taking the harder road.