So, I am working on a production of Shrek, and as usual there is a limited number of fixtures at my disposal. In order to give the show some of the necessary colors it needs, like red, blue, green (that is a big one), purple, I am trying to rely on color mixing of complementary colors to make white-ish washes. (for big musical numbers etc) In theory if I mix a red with a green, I should get roughly a white. What I was wondering has any tried this before with any success? If so what color gels where used? Unfortunately the venue we are currently using has limited number of gels, but I should be able to order some if know what I want.