I am much happier with the background now but still not sure if it is done yet. I am toying with the idea of either making the dots bluer/greener or possibly even iridescent but I need to do some playing on scraps first.
At least I can move onto the portrait again now as I think the color is much nicer and brightens things up again. I used a light wash of the background colors and then dropped in indandethrene blue in areas. It was ok but not as bright as I would like so I then went over the entire top area several times with winsor green. This really helped to brighten and enrich the backgroun color. It also gave a richer color & more depth to the dots.