Not even the background colour — just the tint colour, which is supposed to be chosen to suit your app. The OP has left the default blue tint colour in his app.

Not even the background colour — just the tint colour, which is supposed to be chosen to suit your app. The OP has left the default blue tint colour in his app. Giving an app a key colour adds value in the same way a unique and distinctive icon adds value. I understand that you may view apps as purely functional, but I don't believe Apple views them this way. Given the vast number of apps, both functionality and design quality are important. I happen to agree that they should reject poorly (or undesigned) apps from their store, I only wish they would be more picky.