I think it was Bob Gill who I first learned the idea-generating convention of asking questions when brainstorming a design. i.e. Why would a walrus say “I am the walrus”? Afterall, a walrus is funky, fat, and ugly—but this phrase sounds loud and proud. Well, the walrus must really feel confident and pretty. Oh, and this drug-induced Beatles lyric also borrows a bit from psychedelia. So throw in a dash of those fonts and colors as visual ingredients.