These signs just get better and better while prices for technology continue to fall.
Our "theater" is one component of our bar/game room/theater (it becomes a theater when I turn out the lights).
Several years ago I found two commercial scrolling led signs made by Salescaster that a big company was going to throw away. These oldie signs only have one color - red - but allow for multiple messages to be stored and played at different speeds and etc.
Point is we really enjoy having the signs and if you google around the web I imagine you can find all kinds of options (depending on how much you are willing to spend). If you are one of those with a theater entry and concession stand area you probably can afford a lot more sign than I can
If you go to the Salescaster.com website you will see "top-of-the-line" either off the shelf or something custom designed - the lower end will be a product as found in a store like Sam's Club.
Did you know you can get custom neon signs made to your specifications? We had a couple made for our room and - WOW!
Watch out for signs with VERY low prices as they are often very poorly made "knock offs" from China and the components just won't last long - this is true with led signs and specially true with neon.
GoodLuck