Version 157.0 turned everythign purple

In case anyone else other than the OP (even them) sees this, you can go to about:config and set browser.nova.enabled to false and it goes poof. Works for me anyway. How long will this toggle work? Don't know.

WARNING from the moderator team: Changing Firefox preferences from the about:config page can sometimes break Firefox or cause strange behavior. You should only do this if you know what you're doing. Please read Firefox advanced customization and configuration options to learn more.

Bonjour

A space for users to give product feedback https://support.mozilla.org/en-US/kb/what-mozilla-connect

The new Firefox design lands in today. This is what you can expect https://connect.mozilla.org/t5/discussions/the-new-firefox-design-lands-in-today-this-is-what-you-can/td-p/139524

Hi

I strongly recommend that you do not use that about:config preference.

There are theme options available in Firefox and you can install a theme of your choosing from our add-ons site at https://addons.mozilla.org/

Already to time away from work to try to untangle the not asked for firefox mess by going to themes section. Themes does not fix everything. Sample of what themes evidently has nothing to with is show in attached picture.

Please do not leave the community. I would be happy to help you. If you really don’t like it check out this project (though it’s not endorsed or supported by Mozilla so any help for thst should go to the issues tab not the bugzilla): https://github.com/black7375/Firefox-UI-Fix

Who approved this design trash?? They should all be fired. Like lee alluded to, themes literally only change background image and color palette. They do not bring back normal looking tabs and menus. They don't get rid of the bubbles, which are everywhere on everything! FF is unusable garbage now, I'm sorry to say.

Hi,

The people who answer questions here, for the most part, are other users volunteering their time (like me), not Mozilla employees or developers. When a Mozilla employee jumps into a discussion, you'll see the Mozilla Staff label next to their name.

If you wish, you can leave feedback for developers on the Mozilla Connect website. Click the Firefox Menu button in the toolbar, click Help and select Share ideas and feedback…. Alternatively, you can use this link. Your feedback is collected by a team that reads it and gathers data on the most common issues.

You can also file a bug report or feature request. See File a bug report or feature request for Mozilla products for details.