Restaining A Leather Seat: Recommendations

We have a 99 5 series with tan interior. The driver's seat has a worn patch on the left driver's side bolster that I want to get restained/repaired. I have never tried repairing/restaining leather so I'm not sure where to start.

Any recommendations for a firm in the Thousand Oaks/Westlake Village/Conejo Valley area of Southern California that specializes in automotive leather repair?

Thanks!

Do It Your Self Instructions | Leatherique Restoration Products

Thanks for the link. I've seen references to their products but never used them.

How much time will it take to do this? I probably would strip the entire seat (maybe both front seats) and redye it to match?

Any other comments or suggestions would be appreciated!

Thanks for that link Rasky. I needed that info too