Hey Drew, what exactly are you trying to do with the diffusion? Are you looking to not see individual RGB LEDs or looking to help with color shadow?
I can snap a few shots for you of some DLED 36s with and without filters, and also so Opti 30 RGBs in the same situation. Color shadow wise, diffusion can help a ton. As far as not seeing individual LEDs, it won't help as that much. You would have to try and move the diffusion farther away from to light to eliminate that.