I finally managed to get the colour that I mentioned before on an image, just with a proper camera. I haven't worked on the image or touched it up, tis is what I get with UV light. I've got a total of 8 different colours with this piece, depending on the type of light. This pink shows up with UV, and other colours vary between mauve, violet, blue, blue-grey and dark grey with daylight, ceiling light, a torch shining inside it shows bright blue, camera flash and it goes grey, sideboard lamp shows agua-marine/turquoise … and it goes on and on...very entertaining but it's wearing me out.