Hi Wondered if I can pull on your experiences. I am about to change the colour of 2 MGF seats to fit my vitesse. Red to black. The seats are leather fronts with sides and back of vinyl. I have almost bought the furnatureClinic system, then read the info on the Gliptone pages. FC system seals in the leather under a finish coat, Gliptone have 2 systems one that does the same and one that does not seal the dye but both G systems have leather softening before dyeing stage. Have any of you used either system? Thanks in advance for feedback. :)