As said, de-doming will warmen up emitters. HOW-TO
You can also use color filters. Photography strobist (flash) people often use them.
Examples in link.
As you can see, output will decrease a lot depending on how much you warm up the beam.
NO!
Buy the real deal if you want good color rendition combined with a nice color and good output.
The LED database in my signature could help you on finding the emitters you desire.
When that is said, de-doming CW emitters s a free and easy way of making emitters less cool (which will also increase throw).