For the soft/hard colour transitions? Well, for example, look at the current colours in this theme we have now and note how it all looks kind of well, smooth, but then look at the Simpsons theme. It just has a whole heap of colours that, while they fit with Simpsons, would be what I say looks like it just jumps from one colour to another. It's hard to explain, but my comparison would be from this theme to Simpsons, hopefully if you compare how the colours look to transition in them you'll get the idea of what I'm saying.
This is a nice reminder of how much I suck at explaining things. :P