I bought another Clawdeen Wolf doll similar to the one I already had, so I decided to paint her shoes as I don't need two identical pairs.
First I painted all the outside surfaces white and the soles brown.
Here are the paints I used for the boots. The only one missing is "EU 658 Antique Gold," which I used for the buckles.
At this point, there were several layers of white underneath and several layers of Turner's Yellow on the straps.
I prefer not to paint parts that touch the doll's feet, but I had to paint part of the insole as it will remain visible. The sealer should prevent any staining or rubbing off of the paint.
Here are the finished boots (covered with sealer) in Clawdeen's feet. The originals are also shown for comparison.