Are we ever going to get this type of paint (or one with more colors, like a mood ring) preapplied to PCBs? I know there's one fab company that uses all purple

Are we ever going to get this type of paint (or one with more colors, like a mood ring) preapplied to PCBs? I know there's one fab company that uses all purple boards, and sparkfun loves their red PCBs. I assume the results wouldn't be worth the complexity of applying the coating.