How would I go about changing ImageColor3 to TextColor3?

script.Parent.MouseButton1Click:Connect(function()
	
	local Name = script.Parent.Parent.Parent.Parent.Parent.Parent.Name
	local Player = game.Workspace:FindFirstChild(Name)
	
	Player.Head.Rank.Username.TextColor3 = Color3.fromRGB(script.Parent.Parent.ColourDisplay.ImageColor3)
	
end)

the script sets a players rank colour based on a gui colour however the colour of the rank just turns to black when the script is ran