Dye removal on light colored leathers

How can I remove discoloration on leather caused by dark denim? (I.e. Leather couch and white leather shoes)

Hi,

I found this online when someone asked how to remove denim stains (from a skirt) off of light leather shoes:

Try rubbing antibacterial gel into the stain. Allow to set for 15 min. or so then rub off with soft cloth. I've removed all kinds of stains with antibacterial gel and it hasn't harmed any surface I've used it on.