I do agree the green is SOOOO striking. Your idea for a more organic approach (using purple and pink) is an idea worth a try!!
I'll probably tone down the green with blendings of blues and purples, to give it a more organic look, i did think about how to add more detail to the tubes and your idea confirmed my suspicions!
My Undivided Knights are "okay". My Khorne knights are an embarrassment, thats why I didn't post a pic of them LOL!
And thanks for your approval of the shuttle terrain, they are lotsa fun to do and I really enjoy the results for them!
My fiancee likes the shuttle terrains too!