Samsung Notes Discrepancies between PC and Tablet

Hey guys. First time posting here so I hope someone can relate, provide some tips, or ask Samsung to fix this massive issue that is driving me insane. 

I have a Tab S6 and a Flex Alpha2 Laptop. I set things up this way so I could use Samsung Notes for school seamlessly between the devices. As it turns out, it's not so seamless after all. 

The apps are COMPLETELY different between the two, and while I can tolerate that and get used to it, what I can't deal with is the color inconsistency. Yesterday I wrote out notes in black pen on the PC app, and when I went to load them up on the tablet the next day, they were so light gray I couldn't see them. The colors on the PC app and tablet app are completely different, as well. I highlight in very light pink on the tablet and it shows up a deep mauve in the PC app. 

Is this a known issue? Is there some kind of fix for it? Samsung is a wonderful company and I own so much of their tech its ridiculous, but it baffles me that their Notes app is so... well, flawed.