Thanks

I have dyed two of my bone handled knives with good results.
I use leather dye. They all seem to be alcohol- based.
It's easy, but can be a litle tedious.
Just wipe the knife down with some rubbing alcohol first.
Get some gloves, paper towels and q-tips, or a fine tipped artist's brush.
Have a few spare q-tips that you'll dip in rubbing alcohol to spot clean the dye off of pins and shields, metal parts, etc.
Put on the gloves and paint the dye on with a q-tip or brush
It won't really stick to metal parts but just use an alcohol moistened q-tip to clean up the overage on the bolsters, etc.
It will look somewhat blotchy but you can even it out by rubbing with a paper towel or rag. I used a couple of coats/applications to get the color I wanted. I didn't let the dye sit very long before I wiped it to even it out, maybe 2-3 minutes.
You'll find the dye comes off any metal parts with some good pressure from the paper towels or rag. Just use alcohol if you find anything stubborn.
That's it!
I've come across threads here where folks "cook" their knives in pots with water and Rit dye. That just seems too involved and some have cracked their bone handles. No thanks.
I've had great luck with this leather dye approach, but as a woodworker, I also feel wood stain would likely work pretty well. I'm anxious to try that sometime.
Best of luck