DeadEyeDevil

unfortunately doing this would likely require the alteration of in-game shaders, which is a much harder feat than simply swapping out a model or material. It might even require serverside modding.

likely not possible, as Ghost Coins are tied to the store for microtransactions. Due to GR:B being an online game, any sort of performance-enhancing mod would necessitate altering Ubisoft servers. Doing so would be impossible and if it were, it would also be illegal.