Here’s something that we just added to pattern search today. You can find patterns that typically use a certain number of colors by selecting the “Colors used” filter. We don’t track information about the number of colors that a pattern requires so we get this number by looking at the projects that are associated with a pattern.
(Sometimes we add search options without much fanfare. Here’s another one you might not have noticed: You can use the “designer country” filter to look for designs from specific countries)
PS We’ve had a lot of requests, so here’s the search I used to find the patterns in my screenshot :)