I'd have to look it up, but I think you used the different colors to either represent base pairs or gene sequences. It's one of those stupid manipulative modeling things that's supposed to help you "learn by doing" but in a representative manner. It's called Rebobs, if you're interested. I'm sure it'll come up in Google. There were marshmallows and jelly beans involved as well. It's just the only time in my life I've ever bought gumdrops other than for gingerbread houses. They're the kind of thing you eat because they're there, but never buy yourself.