Hello, I need some help please!

I just upgraded to v6 recently and after the 6.0.7 update, suddenly when I am using the pencil it comes out with a tan coloring underneath my selected color, no matter what color it is.
This does not appear to be happening with other tools, except the watercolor brush sometimes is looking to have a similar effect. I am hoping it is simply that I am missing something incredibly obvious, but I have gone through every settings area that I can think of to have that sort of effect. Also it changes colors when moving over different colored areas (I recall encountering this in v5 and was able to adjust it, but I seem to have forgotten..)

I feel like I remember a multi-color setting somewhere in a previous version, but perhaps I am thinking of something else.
Any help is appreciated, thanks!