Ah have you seen the light of Saint Duncan of the two thin coats
You can do most models to a basic/reasonable level with maybe 4 or 5 paints in many cases (then do the highlights/fancy stuff later).
I've not made much progress with my models this week as I've been under the weather, although I did spot I'd messed up my skull cannon (forgot to fit a part that had to go round a rod before gluing the rod in place), fortunately due to it's location I managed to cut the part in half and fit it in without it being obvious.