Neatsfoot oil for Holster?

[treebeard]

I've read the article on this site about holster preservation. For years I've used 100% neatsfoot oil as a leather preservative--it does darken the leather. How does the Picard and Lexol compare-especially as to the darkening of the leather. I've just acquired an excellent condition brown Luger holster that I want to do the right thing by.Thanks for any advice.