You can now create your own color theme. Just choose 'Custom' color theme in options and go to 'Colors' section to set whatever you like.

You can also share themes with each other by Copy/Paste encoded strings like this b6rz8rdws4HcfuS2tLRQ8+zbsG9qGPp0xOjqkYXY//XYFBMRNzIyAA=