Can I not change the color of the parts in a tool?

Basically, when a player clicks the textlabel specifying what color they'd be choosing it fires the remote, it should go through the weapon that they had equipped and check for all parts, meshparts, and unionoperations. Lastly, change the color of said part, though it's not working?

LOCAL SCRIPT

--[ Client
local plr = game.Players.LocalPlayer
repeat wait() until plr.Character
local char = plr.Character
local hum = char:WaitForChild('Humanoid')

--[ User Interface
local Buttons = script.Parent
local Red = Buttons:WaitForChild('Red')
local Black = Buttons:WaitForChild('Black')
local Pink = Buttons:WaitForChild('Pink')
local White = Buttons:WaitForChild('White')
local Green = Buttons:WaitForChild('Green')

--[ Children
local Remote = script:WaitForChild('RemoteEvent')
local UI = script.Parent.Parent.Parent
local Main = UI:WaitForChild('Main')
local Mods = UI:WaitForChild('Mods')

--[ Variables
local debounce = false
local color = nil

local function touchgreen()
	if not debounce then
	debounce = true
	color = 'green'
	for _, v in pairs(char:GetChildren()) do
		if v:IsA('Tool') then
			Remote:FireServer(color, v)
		end
	end
	Mods.Visible = false
	Main.Visible = true
	end
	wait(10)
	debounce = false
end

local function touchred()
	if not debounce then
	debounce = true
	color = 'red'
	for _, v in pairs(char:GetChildren()) do
		if v:IsA('Tool') then
			Remote:FireServer(color, v)
		end
	end
	Mods.Visible = false
	Main.Visible = true
	end
	wait(10)
	debounce = false
end

local function touchblack()
	if not debounce then
	debounce = true
	color = 'black'
	for _, v in pairs(char:GetChildren()) do
		if v:IsA('Tool') then
			Remote:FireServer(color, v)
		end
	end
	Mods.Visible = false
	Main.Visible = true
	end
	wait(10)
	debounce = false
end

local function touchpink()
	if not debounce then
	debounce = true
	color = 'pink'
	for _, v in pairs(char:GetChildren()) do
		if v:IsA('Tool') then
			Remote:FireServer(color, v)
		end
	end
	Mods.Visible = false
	Main.Visible = true
	end
	wait(10)
	debounce = false
end

local function touchwhite()
	if not debounce then
	debounce = true
	color = 'white'
	for _, v in pairs(char:GetChildren()) do
		if v:IsA('Tool') then
			Remote:FireServer(color, v)
		end
	end
	Mods.Visible = false
	Main.Visible = true
	end
	wait(10)
	debounce = false
end

--[ Event Binding
Green.MouseButton1Click:Connect(touchgreen)
Red.MouseButton1Click:Connect(touchred)
Black.MouseButton1Click:Connect(touchblack)
Pink.MouseButton1Click:Connect(touchpink)
White.MouseButton1Click:Connect(touchwhite)

SERVER SCRIPT

local remote = script.Parent:WaitForChild('RemoteEvent')

local function changeskin(player, color, weapon)
	if not player then return end
	if not weapon then return end
	if not player.Character then return end
	if player.Character.Humanoid.Health <= 0 then return end
	
	if color == 'red' then
		for _, v in pairs(weapon:GetChildren()) do
			if v:IsA('Part') or v:IsA('MeshPart') or v:IsA('UnionOperation') then
				v.Color = Color3.fromRGB(203, 0, 0)
			end
		end
	end
	if color == 'black' then
		for _, v in pairs(weapon:GetChildren()) do
			if v:IsA('Part') or v:IsA('MeshPart') or v:IsA('UnionOperation') then
				v.Color = Color3.fromRGB(0, 0, 0)
			end
		end
	end
	if color == 'white' then
		for _, v in pairs(weapon:GetChildren()) do
			if v:IsA('Part') or v:IsA('MeshPart') or v:IsA('UnionOperation') then
				v.Color = Color3.fromRGB(255, 245, 255)
			end
		end
	end
	if color == 'green' then
		for _, v in pairs(weapon:GetChildren()) do
			if v:IsA('Part') or v:IsA('MeshPart') or v:IsA('UnionOperation') then
				v.Color = Color3.fromRGB(121, 255, 111)
			end
		end
	end
	if color == 'pink' then
		for _, v in pairs(weapon:GetChildren()) do
			if v:IsA('Part') or v:IsA('MeshPart') or v:IsA('UnionOperation') then
				v.Color = Color3.fromRGB(255, 0, 255)
			end
		end
	end
end

remote.OnServerEvent:Connect(changeskin)