I have a tan leather bag that got scuffed at the bottom and have been looking around for tan shoe polish, not finding anything. Everything I found was too dark - then I noticed that a self-tanning lotion I had left over from the summer was the right tan color.
If the bag or purse is valuable it may be best to have a professional take a look. Shoe repair shops are one place to start. There are also many products for sale made for cleaning and renewing leather items. Take care when doing this yourself. This is a page about restoring a worn leather bag.
With use, a leather sofa can develop worn spots that differ in color and finish from the rest of the piece. This is a page about touching up worn spots on a leather sofa.