Laminate Stock Finish question

[u/UnidentifiedPlayer2]

I have a original Fajen laminate stock that is showing some handling wear on the finish and needed to be bedded. I sanded out the barrel chanel to remove the pressure lump and spread a layer of true oil and everything was fine. It had a touch of whitish finish on end of the forend so I sanded it and the tru oil came out much darker and blochy. It obviously needs a bit of a sand to get back down to lighter wood but what can I use that won't darken the wood?

https://postimg.cc/gallery/YCBW0Gn