Like MySpace? I think people should let their tools look the way the want it to, but it always goes downhill from there. It's one of those things where it's better to just keep it simple and standard looking.

If you want to keep it simple and standard looking, go ahead. I don't see that changing in any way.

A classic use case of the new feature for business users, would be using different board colors to easily differentiate between boards.

Just this would be a nice usability win.

You'd think so, but from when they said 'Trello Gold is for individuals' it sounds like it won't even be available to business accounts.