How can I differentiate between pure Modern UI and Desktop Applications in the start screen?

The Modern UI menu shows now both Modern UI and Desktop Applications, the only difference so far is that the built-in Modern UI Apps have a simple white icon instead of a colored.

But already my first additional applications bought in the App Store have also a colored icon like any other Desktop App.

Is there a way to better differentiate, or somehow flag Modern UI or Desktop Applications?

The easier way to differentiate them, it's the tile background. For Modern UI Apps, the color is the color chosen by the developer. For the Desktop Apps, the background is a gradient from right to left. (#333 to #666 I think...)

I use Windows 8 for over 2 months and still no other way.