I just did the "Layered Star" quilt for a teenaged boy --- no florals, of course! Just lots of dots, bold colors, geometric patterns, etc. I used blue, purple and gold as the 3 'star' colors. He adores it! And I did a "Tumbling Blocks" quilt for a 4-year-old. Lot's of colors, but all masculine: blue, green, gold, tan, brown, etc. No prints, but some dots and small patterns (e.g. wavy lines). He adores his. You really have to think from a different place when putting a "guy quilt" together. I find it helps me to stand in my husband's closet, or look at a man's clothing catalog, just to get a sense of the colors and designs. My husband caught me in his closet once, and ask, in a puzzled voice: "What are you doing in here?" I told him I was "communing with his clothes." I could hear him laughing all of the way out of the room. I'm not sure he ever figured it out!