I tend to paint mine in an all pale brown or fleshy base depending on how fresh the are and how much flesh is exposed.
I then either 'work in' painting the flesh on top of the pale brown base, or 'work out' painting clothing on top of the flesh base should the figure be more flesh than clothing.
After either method, I start to apply washes followed by the hair and gore. Wounds, protruding bones etc. Another suitable wash is then applied to these areas before the next (often final) highlight for Z's that will form a mob or horde. They're normally a pretty dark and dirty 'fresh from the grave look'.
Eyes (normally just white as if 'rolled upwards') then a shade beneath the eyes, often a slightly darker colour than the skin, alternatively a blueish grey/purple. This is purely to emphasize the white eyes.
Then I work on the bases.
The only exceptions to the above rule of thumb seem to have been the Zombie Vixens I've acquired recently. I find that as they are modern civilians(something I've never really painted before), the colours for clothing are often cleaner and brighter.
Sure there's blood stains and gore with some dirt and dark washes, but few of the figures have that 'I've been in the ground sometime' look, they look like relatively fresh kills that have been bitten and become walkers.
With the exception of the figure of the lady Z in the long cocktail dress, few of the figs have been painted anything other than a paler version of the regular flesh colours I use for my living Caucasian figures.So far out of the 12 or so figs I painted last week before them being boxed away for storage during the move, 3 are pale grey/rotting flesh, the rest are a variety of very pale flesh coloured.
I can't wait to be settled in the new place and get my paints out again. As we're moving to my other half's parents for between 1-6 weeks (argh!) I fear I may go nuts without being able to paint. Not only that even internet access may be limited so please don't think I've given up the ghost or I am being rude.
I miss painting already.....