Bulk change several list items from one color to another color and change color order

I noticed that the colors are set as-is starting with the color turquoise. The problem is, when I enter items, there is a color assigned based on the item (yes, I know I can change the color upon entry). However, I want to be able to bulk change list items from one color to another color so I can shop in the flow of the store aisles. In addition, it would be helpful to change the sorting of the colors. For example, move the color turquoise down a few notches or the color red up a few notches. This will also help in sorting list items and the way I want to shop. Basically, I want a really cool way to group and sort list items whether they are on the list or checked off the list. Thanks,  -t