a gui that makes blocks disappear depending on the color?

local platforms = workspace.PlatformsFolder --put all the platforms in a folder

colors = { --table of colors
	BrickColor.new("Really blue"), --Really red
	BrickColor.new("Really red"), --Really blue
	BrickColor.new("Deep orange") --Deep orange
}

while true do 
	local color = colors[math.random(1,#colors)] --index the table and get a random color with math.random
	print(color)
	for i,v in pairs (platforms:GetChildren()) do --get children returns a table of the children in the platforms folder. for i,v in pairs goes through this table
		if v:IsA("BasePart") then --check if value is a base part
			if v.BrickColor == color then --if the color of the value is the same as the random color chosen then
				v.CanCollide = false 
				v.Transparency = 1
			else --if not
				v.CanCollide = true
				v.Transparency = 0
			end
		end
	end
	wait(5) --wait however long in between color changes
end

Okay, there turned out to be a bunch of issues in my original script. I went into studio and fixed it. This should work. Make sure when you're picking your platform colors, you do so using brick color and not manually typing the rgb values. For some reason I couldn't get it so that you can have custom colors.