I have a tote bag that cost £400. It's about 3-4 years old and has been used every day. It's an a burnt orange colour with brown lining. No zips apart from a zip pocket inside.
Looking online it seems you can buy leather dye which states it's for shoes and bags. I don't know how to do links...
www.vinyldye.co.uk/Leather-Dyes-Restoration/Leather-Dye-Kits
Has anyone dyed a bag - were the results any good?