So I tried to whip up some colour keys a few weeks ago, except I wasn't getting very far, and I wasn't happy with the results. I decided that I might have more luck doing just the 10% (we're to have 10% of our film (so 15 seconds) completely finished before Christmas), and it turns out I did! I'm stilll not happy with the style I painted it in, but that's not how it'll be painted in the final film, so it's not a problem. I am however, happy with the colours. I think the exterior scenes are cold, and the interior ones are nice and cosy.
I used Paul Abadilla's 'Colour Script Exercise' as inspiration/a guide. Except his are utterly lovely. You can find his here.