There should be a possibility to add effects (glowing, particles, color) to any cosmetics, like for example adding a gem to it (like those gems in unusual couriers).
Sometimes I like to use those common or uncommon items that really looks good, but look like cheap in game since..... it is just cheap . We should be able to customize our set that it will not look cheap even though it is just common/uncommon.
They already added the 'infused' thing, so why not expand it and make effects available to any cosmetics in customized way.