If you have truly found your form, the whole world of everything should be opened up to you. Anything that crosses your mind can be incorporated, Anything. Creating the world of light is the central role for the painter.
Just looking at the natural world and its colors, shows me the harmonic relationships of these things. Almost everything I see in nature is modulated.
If you can see how to modulate on the pallet, this will bring the scale to the front.
I like the idea of achieving space in ways that don't make any sense at all. Think of setting up a relation of harmonic grays and then just float a saturated color that just hovers over there in space.
I love it when space just presents itself. The smallest inflection could change the whole thing.