It will be inked, and likely with more detail. I'm not sure about colours. The problem is if you put some colours in you sort of have to do all or most, and I gather white is hard to do (which is what colour the wings and cloth would be). I guess the only other colours would be red and yellow on the flames and hair, as his flesh is flesh coloured...

I think it's supposed to be full back, I drew this on an A4 page (it may not be showing actual size here, I scanned it at about 300dpi and shrank it to 30%...).