Playback Loudness Not Working Correctly?

I have currently gotten into playback loudness and cant seem to figure out what is wrong with my script. It is a simple script that causes a change in a color value. It randomizes but I only have it set to two colors just for testing.

local color = {"Gold", "Lily White"}

while true do
	wait()
    if game.Workspace.TrelloSound.PlaybackLoudness > 100  then
		script.Parent.Value = color[math.random(1,#color)]
	wait(.5)
end

I'm assuming by "color value" you mean BrickColor value. In this case, you need to convert the name of the color to an actual BrickColor value:

script.Parent.Value = BrickColor.new(color[math.random(1,#color)])

Also, "Lily White" is not a valid BrickColor name; it should be named "Lily white" (Caps matter when BrickColors are used).