First I used sandpaper on all areas I wanted to look worn. Then I put on a bit of black schoepolish to achieve the look of old leather. After that I used leather dressing all over and sanded the edges. Finally I made some scratches with my fingernails.
Ahhhh Just as planned! THAT is the color K and I were going for from the start. However K knew very well, that the color would darken up over time or with distressing. So he picked a color that would gain the right color over time (or distressing), so that the holster could improve with wear and tear.