SAPHIR(Brown) - Saphir Javacuir - Leather Recolorant - 75 Ml

Can I use it over a little bleached spot on my dyed swede shoe just to blend it better than the white spot?

Is this intended to dye bare/stripped leather shoes?

Is the brown no. 37? I’m looking for the medium brown.

Is the "grey" a charcoal grey - a medium or light grey?? really need to know.. thanks!!