To do what / all that you want in a Painted solution, you will need both a dark Grey and highly Reflective surface.....the latter almost solidly into the Retro-Reflective range.
Been there...done that years ago. Why not now? Because in any such case, DIY or Mfg...there are caveats we / I as DIY Screen advocates don't like, or won't tolerate.
- A decided Grainy look to the image, especially in lighter content areas (Sky...light Pastels...Flesh Tones...)
- Overt Retro Reflectivity. This will be the lessor issue in your application...except for the next point.
- Projector Positioning ( extremely critical if Retro Reflectivity is used )
Three important things for you to make clear:
1. What is / are the PJ/s being used?
3 projectors using warping software
2. What Material is to be used for a screen surface?
Polycarbonate type material
3. Just how much Ambient Light is there to deal with (Level of, and Type/Source/direction)
Ambient light is totally controlled for now. Can be fully bright or total darkness. For this prototype its a completely light controlled environment. Once this goes into production it will more than likely be used in a convention center type environment.
How about usage / content?
Automotive simulation, heavy industry, aerospace, military
There is / are solutions.....but to select the best one...even a compromised one, more input is needed.