Next to nothing, unfortunately. For example, there are 458 hats in existence, and the hue is dyable via a normal dye tub - http://www.uorenaissance.com/itemdetails/LeprechaunHat1/171A/1
Meanwhile, found 2 more hats and a cloak (also >300 in existence). However, there only exist 47 pieces of hue 575 bread http://www.uorenaissance.com/itemdetails/BreadLoaf/103B/1