Since the topic lately is tint I thought I'd share some information I found elsewhere on CPF. I don't remember who originally posted this idea, but it is not mine. However it did work out very well for me.
The CPFer suggested a swatch book from Lee Filters for $2.00 (shipping $5.00), I suggest the designer edition. This swatch book has approx 700 filters samples, of all different color spectrums. They are a very thin film, so you can shine your light through it and pick whatever tint you like. Then cut out a 7/8 circle from the sample and apply it to the inside of the lens.
My Rotary 250 now looks like an incandescent that appears to have no loss in brightness and no effect on beam pattern.
I am in no way affiliated with Lee Filters. This idea was suggested by someone else and it happened to work awesome for me, thought I'd share.
If anyone is interested in this and I'm allowed to post the link to the swatch book, let me know.