Stain removal.

The stain on the left was made when my son leant against something in a garage. It is a black oily mark. First I tried a bit of soap- no good. Then I used penetrating oil-WD40. That worked. I then had to clean  the penetrating oil off. Anyway it all worked and he can wear the jacket again. The sleeve is still damp at the bottom. The colour difference in the sleeves is because one photo was taken in natural light and the other artificial light.  The nearest to the true colour is the bright yellow.
Even when my son was a little boy he hated having a mark on his clothes. He would say, 'sponge it off, Mam'