I just finished painting my blackout screen with behr ultra pure white, which I think would be similar in result to a standard matte white screen.
I figured this is the basic "standard" sprayed screen to start to measure others against and also to learn the technique of an HVLP sprayer.
While I haven't yet done extensive viewing, I think the gain is similar to the blackout I had been using, but the main improvement is purity of the white. Blackout (like the sammples I was using) is often slightly blue. (I did use the slightly riskier eggshell finish, which came out very much replicating the fine texture and very subtle shimmer look of an eggshell)
I tried to paint a few samples pieces of board with the Behr Premium Plus metallic silver and I'm glad I took Assayer's advice not to attempt it on my actual screen:
First, it took some trials to get the thinning and spray patterns right, which could easily have ruined my screen had I tried spraying silver. More important, I don't know if this particular paint is "silver" enough to work well. I should experiment more, but this particular formula seems to be more of a metallic gray than silver. Finally, it is much less forgiving of slightly inconsistent spraying even when doing so correctly.
I should experiment more with different formulas. I'm sure someone here will eventually come up with the right formula (and just as important,----the accompanying application technique) for creating a "SilverStar" like coating. I'm sure its got alot to do with having a correct base layer, the fineness of the metal particles and how they orient themselves and set with different application methods.
I'll go out on a limb and predict "Silver Goo" within 6 months.