Never understood the whole recolored versions of the same item deal. One gold shop service I'd propose is a recoloring service (as opposed to releasing recolored versions) for users to customize the color schemes for their items for a percentage-based (calculated based on the gold shop or average marketplace price of the item, depending on the nature of the item) fee. At least I feel this could work as a functional gold sink to help remove inflated gold from the Gaia economy.