I had some knee high boots, I had altered to have laces up the back.
However I still didn't wear them. I decided I would prefer them if they were navy blue (which I've not been able to find) so proceeded to dye them.
Although the dye comes with its own small brush I don't like to use it. Instead I pour the dye out into a small plastic pot and apply it with an artists paintbrush.
This leather was quite matte and porous so I painted the dye (which has the consistency of calligraphy ink) on without use stripper first.