How to let the script know which GUIButton the player has clicked on?

Goal To make the script know which GUIButton the player clicked on. Problem I have no Idea how to do it, I have a "Color" parameter which that can turn into the Button that was pressed but still the script don't know which button was pressed unless I print it but that just won't do anything except for printing the name of the GUIButton that was pressed.

--LocalScript
local function PressedColor(ColorB)
	ColorB.MouseButton1Click:Connect(function()
		FlareRE:FireServer(ColorB.Parent)
	end)
end

UIS.InputBegan:Connect(function(Input)
	if Input.KeyCode == Enum.KeyCode.F then
		script.Parent.Enabled = true
		PressedColor(PurpleB)
		PressedColor(BlackB)
		PressedColor(RedB)
		PressedColor(BlueB)
		PressedColor(YellowB)
		PressedColor(GreenB)
	end
end)

--Script
Players.PlayerAdded:Connect(function(P)
	P.CharacterAdded:Connect(function(C)
		FlareRE.OnServerEvent:Connect(function(P, Color)
			print(Color)
		end)
	end)
end)