An updated version of the once popular Miller (by NwK|Zulah) for Cata!
Miller is a very light wight addon that has one purpose, to make milling herbs for pigments less of a chore. To use it is simple type /ml and a box will show on your screen containing stacks of herbs in your inventory that equal 5 or more, simply click on it and they will be milled.
Use
/ml or /miller = Toggles toolbar millers tool box
Known issues:
It seems to have a problem on occasion with uneven stacks in you bags, for example a full stack of 20 and a stack with just 1 or) this doesn't happen all the time but to fix it move the small stack to your bank, or try moving it to the front of your bags.