For light colored leather, any oil, such as Neatsfoot will darken the leather. Angelus luster crème is a product used by horse show folks for light colored saddles. I don't know how well it would work on light Indian leather. Many horse people cover their light colored saddles as sunlight will darken them. Leaving moisture on leather is also not a good idea and another reason to cover.
It would be interesting if anyone makes a custom saddle cover for the solo seat of the scout or for the saddle bags of the scout and vintage.