The floss colors in the Love and Joy Sampler kit are shown below. To organize them, please consult page 2 of the pattern and make two labeled floss caddies out of chipboard. Then separate lengths of floss by color and quantity using the Color Key and place them in your labeled slots. To help you separate colors that are close in color these photos may help you.
Some of the colors are a bit tricky to tell apart, but if you use the squares on the Color Key to help you distinguish one color from another, I think you'll be okay. Take your time and do the easiest colors first; when you're left with the rest, separate them into their individual colors and, by process of elimination and these photos, you should be able to get them all sorted properly.