I haven't drawn these characters in awhile and i have never drawn them together so here we are. It was also a good chance to see how there colors and personalities read agenst each others. Im probably gonna have to play with their colors a bit to help make them stand apart from each other.
I think the dark princess is perfect. If you're looking for a stand out look between the two, you may want to go with a lighter blue with good princess, thats my opinion anyway