Batch organise / add colours to list items

I find it very hard and time consuming to edit and organise the list of items. I want to be able to easily colour each item so that when I go into that shop, I do the Blue coloured things first, then Green then Pink etc... At the moment you have to click on the pen, then choose a colour for each item. This takes a long time... it would be much better to be able to multiple select items, then colour them as a group, or to drag and drop to order the items in order of the colours.