Jeff,
I have decided to use a totally neutral gray on the side walls. We are looking at the Munsell Scale because of the neutral colors that will not influence the projected picture (colors) on the screen. The flatter the better because we do not want reflection.
Many paint stores including, Sherwin Williams and Pittsburgh Paints could not help me with Munsell Grays, even when they called there tech help line, and told me that I would have to bring in a swatch so that they could color match.
One day I was in Lowes and was explaining to the Assit. Mgr, the bullshit that I went through with the Roxul Safe n Sound order and questioned him about the Munsell Gray. I told him that I had the Spectral Analysis that I printed out from the Internet. Well he told me to bring it in and he could see what he could do.
The other day, I went in and he was off, however the other MGR told me that the Olympic Rep was in and maybe he could help me, and he did. The tech line gave him the following for N4, N5 and N6.
Munsell Gray
Lowe's; Flat Olympic One
N4
Base 5
101 - 3y13
105 - 5y2
113 - 5y15.5
115 - 15.5
N5
Base 3
101 - 5y32
214 - 2y11.5
217 - 46
N6
Base 3
101 - 2y18
107 - 1y2
115 - 42
Benjamin Moore is a tough find down here, in fact up North that was the only paint that I used.
Do you know where that gray lands on the Munsell Scale?
I will definitely not use Eggshell due to it's sheen, I want to use something that will not reflect the light coming back from the screen.
Always open to suggestions!