Thanks bman84. I will see what the projector looks like at 10'. Yes Axiom matched my wall colour to the grills of the M5HPs. I wanted it done as I suspected I would have to mount the L/R beside the screen. The colour is a tan/sand. It is a Sherwin-Williams Harmony Egg Shell. If you need I can get the details.
M5HPv4 In-wall LCRs
M2v4 In-Wall Rears
M3v4 In-Ceiling Atmos
Yamaha RX-A3070