Windows 10: How to repeat exact selection when using freeform for Snipping tool?

It is snipping from a pdf file to my OneNote notebook. My issue now is with repeatedly freeform snip of same area within Screenshot.Because of some diagrams on the pdf file that I needed to avoid so I have to snip around them. Is there a way to repeat the selected area for next Snip?Otherwise, I have to repeat selecting same area for every page of PDF to avoid same diagrams.APPENDIXSnipping tool freeform snip, background color when pasting

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Snipping tool freeform snip, background color when pasting

Ok, I'll try my best to explain this. I use the snipping tool almost daily for posting HW (I'm a teacher). Generally it is snipping from a pdf file (regular white pages) to my OneNote notebook. My issue now is with the freeform snip. Sometimes I needed
to use the freeform snip because of some diagrams on the pdf file that I needed to avoid so I have to snip around them. Before, when I used the freeform snip to copy a part of the page (remember, it's a white page) and then paste it on OneNote, the background
of the snip was white so it looked like a clean snip using the rectangular tool because the paste is always a rectangle anyways. Now (I guess there was an update or something) the background of the snip when I paste it is black. So I have this pasted rectangle
with the irregular cutout of the white page over a black background and it looks messy. Is there a way to change the background of the pasted snip from black to white? I hope this makes sense. Thanks.

 

Snipping tool freeform snip, background color when pasting

Wow! Thanks for your quick reply. Unfortunately this method didn't work. The high contrast setting is off. And the other suggestion doesn't seem to affect the snipping tool. Attached are two pictures of my situation. Both are of the same freeform snip.
The first one with the white background was done sometime in March, the other one with the black background snipped today. So if there's a way to change that background from black to white as a default setting, that would be great. Again, thanks for your
help.

 

How do you make the black borders with freeform snipping tool become transparent?

using Snip & Sketch with the keybind (the one i prefer), the borders are black.
the old one (Snipping too) has the same problem but the borders are white instead

do you know any third party freeform snipping tools that i could use?