I have a small pocket photo album that fits in my purse .When I purchase fabric a swatch goes in the album. The pages hold it in good but I usually put double sided tape on the fabric too. you can also put only certain colors on pages so you can flip through pretty quickly. Anyway, when you go to buy fabric matching those darks will be alot easier or it has been for me. I love my book even though I get the weirdest looks sometimes. I hope my ramblings make sense.