I have never made a color palette before. I just finished watching this tutorial which I really enjoyed: [ame=" https://www.youtube.com/watch?v=9kQllLy_X4I"]How to Choose Colours that Work! - YouTube[/ame] But it was geared towards making a painting in Photoshop and not really aimed at a game engine with a lighting system…
theres tools such as :https://kuler.adobe.com/create/color-wheel/ that can be pretty handy for working out colour schemes. as far as how to do it for 3d it really depends on the style of the scene - strong saturated coloured lighting might work for some things but strong coloured textures with neutral lighting would work…
there are three systems you're using in UDK. lighting, textures/shaders, and post processing. So it's more complicated than painting. For realism you would normally texture your scene fairly neutrally and then use the lights to control tone. To learn how to light a scene you should look into cinematic lighting techniques.…