UI & Branding Update makes it harder to read & less aesthetically pleasing

The new logo and branding is kinda good! Good job. But the UI update is not good.

I have trouble reading things with the new font of roles in the members tab, and the letters seems uneven. The new color for @mentions and #channels is not really visible either (bring old burple back) The reactions are also a bit ugly when clicked on.
You should probably keep those changes but make them better, or just give us an option to revert the old UI (like old.reddit.com and reddit.com !)