Beacon Beam Color

Is there a way to stop color mixing with beacon beams? I want a player to be able to change the color of a beam by placing only one piece of glass.
Thanks in Advance!

 

@timtower
Would it be possible to have a "ghost block", in other words a block that isn't actually there(and doesn't look like it's there), but the client or server thinks it's there?

 

@timtower thx, i just figured out a solution

 

@timtower It's more of a game design solution, not a programming solution, so it probably isn't useful, but here it is:
First, an explanation of how the game works (for the purpose of this. There are actually a lot more features).

Your(and your team's) goal is to control as many beacon "beam blocks"(i know that isn't a thing i'm just counting the blocks from the beacon to y 256) as possible. Each team has a color. For every beacon beam block of that color, every minute you get 1 point/coin. "Beam blocks" within glass also count. Glass is unbreakable

The solution for me was to have the first time a player places a glass block on an unclaimed beacon, a glass would appear above it of the same color. The next player could right click that block instead of right clicking above it, and that block would change color and a new block would appear above it. This would continue until 256, when there would not be a block on top.

Basically checking for a playerinteractevent and checking if the block right clicked upon was the top glass block.