After I posted last night, I was reading some more of Masopust's book Color and Composition...
One of the exercises towards the end is an exercise at looking at colors schemes in nature. The idea is to take a picture of a flower or an animal and analyze the colors in the picture. They have you actually snip strips of fabric in the proportions the color can be seen in the picture -- fuse the strips to a 3x5 index card and you have a valuable reference for the future if you are looking for ideas. In addition to nature, they suggest looking at magazine ads.
This reminded me of an idea that I had seen in a quilting magazine awhile back. The idea was to look at product packaging and pull fabrics that match the colors on the box of the product. They used a specific product in the magazine, but I'm not going to tell you which one it was just yet.
First, I'm going to show you a picture of the color scheme as I interpreted it from my stash.
Can you guess what the product is that this scheme is borrowed from? Think about it for a minute and then click on the link that will take you to the rest of the article.