I agree the way settings are handled is very techy and old school. It makes perfect sense for us programmer types, but the vast majority of users I'm sure get confused how this is all handled. Some sort of GUI that handles it would be ideal (regardless of how it's handled on the backend - end users don't generally care about that sort of thing).
Further, it would be lovely if we could edit color schemes using a simple GUI as well. Every editor I've used until Sublime has a way to accomplish this.
Crimson Editor has View -> Set Colors, which lets you change the interface and syntax highlighting colors.
'e' Text editor had a way to do this too (no longer have it installed so can't verify where)
phpDesigner has Tools -> Preferences -> Syntax Highlighter. You choose the syntax highlighter you wan't to customize and then pick your colors.
I like the power that is available in Sublime for further customizations (alpha channel control, cascading hierarchy, etc.) if you want, but for basic color selections an interface would be useful.