ok here goes, I am sure there must be an easier and faster way to achieve this:
(might work better with spots or reinkers) I do not have these in the colours I chose.
on the glossy I took the darkest colour ink pad (black) and rubbed it (direct to paper) in a few spot, I then quickly sprayed on rubbing alcohol, it will run and diffuse the colour, I soaked up the excess with paper towel and then used my heat gun to completely dry, then just kept layering the colours on this way darkest to lightest. The images are stamped with the three darkest colours (I stamped the black once on scrap paper first) and then spray with aztec gold pearl ex mixed in hair spray, while the hair spray was still a little tacky in spots I poured on a little gold enboss powder and then heated.
Not sure if any of this makes sence, if not let me know and I will try to clarify.