Issue with Swatches

I am trying to figure out a way to make customizing swatches go faster, instead of having to type in the color code every time I need it. I am doing a series of hair recolors, so I want the same color to have the same color swatch in every recolor file I do. I thought I could upload small square sized custom thumbs, but they just show up as llamas and then when I click on them, they don't change hair colors. They just stay on the same color that was previously clicked. 



Is there anything I need to do to use custom thumbs? Or am I stuck endlessly tying in color codes?