CustomEditor EnumPopup using Images instead of enum values

Hi everyone!

I was just wondering if anyone happens to know an "easy" way to use images instead of the enumValues in an EnumPopup when using a customEditor.

E.g. Instead of having written colors for items which I want to spawn, having them as an image for a more convenient usage.

I hope this was understandable :)

P.S. if any code is given, c# would be very much appreciated.

Cheers & Thanks in advance