local players = game.workspace.players
local baseplatecolor = game.workspace.baseplate.brickcolor
local color = true
while true do
baseplatecolor.new("red")
wait(1)
baseplatecolor.new("blue")
wait(1)
end
Replace "players" with Players. Replace workspace with Workspace if you use game.Workspace. to change a brickcolor, you type:
workspace.Baseplate.BrickColor = BrickColor.new(<COLOR>)