I tried Decor8 v0.95 beta last night and instantly liked it so I bought it there and then. I love the way the interface looks like a Modern UI app even though it isn't (the X in the top right corner to close it is a give away). Is it is possible to integrate it into the Modern UI Start screen so it runs a proper app (it could be called Advanced Customisation)?
Although you can customise colour schemes, I'd like to see a way to give them individual names with a little two-coloured square to show the scheme (as with the original colours) so I can build up a selection of them to choose from. These would then expand on the (limited) ones already included with Windows 8. Also, I'd like to see more backgrounds included or likes to extra ones to download from the website for customers who've bought it.
It's a shame though that we have to buy something that adds a feature to Windows 8 that really should have been included from the start. Why on earth are Microsoft limiting customisation?