Randomize color of floor (Working on a minigame)

I need help, how do you change the color of the floor (which is white) the way minecraftparty.com did it? Please help!

 

wool.setColor(DyeColor.values()[new Random().nextInt(DyeColor.values().length)]);

don't know how they did it but this should work with wool.

 

Mind sharing a giff? Giving us more information? Showing us you at least attempted to solve the issue?

 

I'm trying to make a minigame like Code Red you can go try it out at minecraftparty.com

 

Get 2 positions, loops through every possible location between those 2 locations, get a random wool color, set the block to that color and update the block. Done.

 

That's what I'm working on, I only have the floor right now but I don't know how to randomly set the color of the wool.

 

@Aljed_The_Legit You can set the color of the wool using the parameter which accepts bytes, for example byte 0 is white wool. Random that byte between 0 and 15 and you have a random colored wool.