Who is the guy pictured in this entry from The DC Comics Encyclopedia? Because it's not Neon The Unknown. Neon, as described above, looked like this:
All right, stop snickering. That's how they rolled back in tha' GA, yo.
All I can find online about Neon is about the 1940s version, and nothing about this neon-accented fellow. All accounts have him dead at Pearl Harbor. Neon tubes were not common in 1941, so I can't see that being an alternate costume for Corbett. It looks like a Tom Grummet design to me, and that's his drawing style so maybe neo-Neon was intended for use in The Power Company.
I have no idea. Do you, dear reader?