I tried fiddling with the new color palette a bit, but for some reason the export doesn’t match the editor.

could you get the wrong exported file to me somehow (email analytic@gmail.com)? I wonder if might not just be due to something not reloading properly - browsers are often pretty recalcitrant about reloading things! If you hit reload a few times that might fix the problem, if that be the problem (or test with a different browser if you have one).
(if you share it instead does it work?)