I'm interning at a new startup, and I've been tasked with designing the front-end of the site. I really, really want to use the new Twitter Bootstrap (http://twitter.github.com/bootstrap/). It's all CSS, looks amazing, works great, and lets me get to designing and not worrying about the little stuff.
However, is this a good idea if it's a demo of a webapp that we're building that could become production code? Will it look silly and amateur if I use this instead of coding it all myself? Is the bootstrap too Twitter-ish for a real company's brand?