Should the requesting combinator and the buffer store use the same color wire to connect to the station input? After all, in this case, according to the rules of the logical network of the game, the signals add up? Or is it completely unimportant?

Does it matter which color wire I use to connect the storage and the combinator with LTN signals to the station input (light bulb)? Should it be wires of different colors? For example, if the storage transmits a signal that it has 10k of ore, and the combinator transmits a request for 10k (-10k), th...