You are not alone - look at Pass Labs' Rushmore speaker, and read the design philosophy - warm richj sound, art deco waterfall styling - exactly what you're talking about, only it costs $45,000. I am also in the process of putting together a fun system, something that will look and sound 1940's-ish. Audio physic Virgo IIs have warm bass. They were one of my favorite speakers, and I still might buy a pair someday. The combine warm bass with very revealing midrange, giving a combination of modern hi-end with a rich bass. I was not impressed with the Virgo IIIs though. Also, try the Linn Espeks. I really liked them, but they had too much bass for my room. If you can put them so they're not too close to corners, they are great fun! They have a distinctly modern look, though, and look much better from the back than the front. Not too high-end revealing. I've heard them in 2 stores and my house. One store they sounde like a pair of clock radios, I think because they were far from a back wall. I think their rear firing woofer needs to be a foot or 2 from the back wall and far from the sides.
Zingali horn speakers were also a lot of fun, especially on the big band music I like. They definitley introduced a coloration. I also once tried a Golden Tube aAudio SE40 that added a harmonic distortion that made stringed instruments sound fabulous, but which added the sheen of strings to everything they played, including vocals. Fun ijn a way, but best if you really like violin music.