I have a script where when they collect the key it changes the gui color, of the image? [Solved]

When the player gets a key, I want the image color to change to white!

function onTouched()
    game.Workspace.Door.key.Value = true
    game.StarterGui.KEYS.key1.ImageColor3 = Color3.new(255,255,255)
    script.Parent:Destroy()
end

script.Parent.ClickDetector.MouseClick:connect(onTouched)