I love Kona solids. I purchased the Kona solids 5" charm packs to solve the same questions you have. There are 217 different colors, divided into 5 different groups. Easily match them up to my fabric stash and then pull out the color swatch I am looking for (they are bundled together) and head to the LQS. Perfect size to place against fabrics and make decisions. Sewing Machines Plus sells them for @ $34 for all 217, equilter has them for 10.50 per bundle of 42 or 43. I know several other sites sell them as well. I personally think $34 was a great investment. I even use them to match up colors in other fabrics. I take the swatch to the store and it helps me get an exact or very close fabric tomatch besides the Kona solids.