It depends on how "deep' that discolouration goes.
Check out the work of Mark Novak (Anvil) for lots of good pointers for saving wooden stocks without "bubba-fying" them
Lots of excellent, practical info in Mark's videos.
For example:
Thank you for that great video. I love how Mark calls it a "conservation project." That is the best description for most of what I do and correctly describes the goal of the project.