So here is a breakdown of what I've done so far...
So, after a undercoat of Halfords Grey primer I played down a base layer of VMC Cork brown as the base layer for the wings, After this I made a mix of 50/50 VMA red and yellow to make a vibrant orange (the pictures don't show just how orange this was, it's more orange than yellow).
The orange was done leaving about 20% of the flesh showing (the symbols in the wings will be painted later).
Next was a neat red, VMA again this time within the orange limits.
Next was VMA Hull red, a very dark red black colour, just around the wing veins.
Finally VMA Black along the veins, low pressure on the AB and small amounts of black, avoiding overspray onto the previous layers.... and thats it, job done.... for now, time to slip on some rubber...... :/
So this is something new for me, some mates of mine, Pete and Dee, went over the the Netherlands recently for a painting class with Pepper Sevadra, and came back with new (for me at least) knowledge.
To protect the work done so far a layer of Liquid mask is 'painted' over the areas you want to protect. I did this a section at a time as I did not want the masking fluid to go onto the veins of the wings, a quick blast with a hair dryer speeds this process along.
After consultation with Pete, he recommended doing a few layers of the mask to make it easier to remove later.... I did two layers on each section, I'll find out later if that is enough...
Wings covered, time to leave them to dry....
Onto the body of the beast. I did an off the cuff mix of these to get a dark red base layer with a hint of green to cool the shadows down and create some "visual interest".

Base layers down, as well as a few high lights using the same VMA red that was used on the wings.

I saw a technique on You Tube by
SchnauzerFaceMinis where he used pastels to do colour variation and shadows on a large model, this vid ( https://www.youtube.com/watch?v=6HjkO44H-AU&spfreload=10 ) is what I'm talking about. So I figure, lets give it a go, whats the worse that can happen right?....... Sorry to the lads in the store if this goes pair shaped!

HULK SMASH!!!! the powder was a scraping of the dark green and purple mixed with a little dark brown, it was pushed into the shadow area with an old dry brush and then dusted off with a tank brush, leaving the powder in the deepest parts.

Once dusted, the who model was given a coat of matte varnish to seal the powers down.
Not a bad effect.......... I think......
Watch this space.....