I have been working on a project using Delta's transparent glass paint and have been having difficulty achieving the color intensity that I want. The darker colors like blue, green, and even yellow seem to cover and show up well but the pink is the one giving me a hard time. I find it is even inhibiting when mixed with the blue to make a lavendar. I have had to use many coats and wondered if anyone else has had this happen or has any suggestions to make it work better. TIA