Need a warm speaker for a bright room

"Warm" speakers aren't going to solve your problem totally. In addition to speakers, you'll need to consider taming excess surface reflectivity with some manner of acoustic control. Are rugs on the floor an option? Very decent hand woven oriental rugs suitable for traditional or modern decor are available for less money than you'd think from online merchants like Rugman.com. A warm speaker will of course roll off high frequencies, but the smearing of sound, muddiness, and echos will remain. If you absolutely cannot make any room changes, consider inexpensive room equalization like the Behringer EQ2496.

Ok, could you elaborate a little on "can't do much with the room." Are you in a position to add room treatments like bass tube traps or acoustic treatment panels? Even some modest small acoustic treatments for the corners of the ceiling can help tame your issues. Understanding and treating room problems is not something you can accomplish by following advice from someone who hasn't seen your room though. It's going to take some self education and reading on the subject. There are a huge number of excellent online resources for this. Just Google something like "bass traps" or "acoustic room treatments" and there will be days and weeks of reading to help you understand the issues and the multiplicity of ways to go about treating problems. The longer I'm involved in this crazy hobby, the more I realize that proper room acoustics are a major missing link in many if not most individuals' search for audio nirvana.