How can I get this vital colour script working in my game?

In my game a function allows users to morph into a model then colour those model parts using this script. It works fine in testing mode and in Online mode, but once players reset the coloring script stops working altogether. I suspected LocalPlayer but am unsure how to use getPlayerfromCharacter in a GUI button rather than a OnTouch button. Relatively unsused to using this syntax.

local player = game.Players.LocalPlayer
local character = player.Character or player.CharacterAdded:wait()
script.Parent.MouseButton1Click:connect(function()
	local Get = character:GetChildren()
	for i = 1, #Get do
		if Get[i].ClassName == "Model" then
			local Gget = Get[i]:GetChildren()
			for i = 1, #Gget do
				if Gget[i].Name == script.Parent.Parent.Parent.Parent.Target.Value then
				Gget[i].BrickColor = BrickColor.new(script.Parent.Name)
				end
			end
		end
	end
end)

Thankyou very much