Jacob
What goes around comes around.
Oil can restore colour to some hardwoods. Your prob was too much oil! If you must keep them oily then just a quick wipe before you use the chisel is all you need. What about the wax problem - it can act as a resist to later finishes?This oil on wood thing is interesting.
I bought a set of six Wickes chisels in a plastic case a few months ago - plenty good enough for a novice like me. I oiled them to keep rust at bay, and found the oil was staining wood that I was working on. I found out from youtube how to make my own wax. For parts of tools that come into contact with wood I now use only wax, with oil for the rest. This has cured the staining problem and still prevents rust well.
I don't know why only the oil caused staining. Perhaps somebody can explain?
Just noticed Classic Hand Tools do oil stones including Arkansas - cheaper than I expected Oil Stones