Swap out primary UI color for Zoo brand blue, add theme color setting to control its hue (#2017)

* Add a setting for themeColor

* Add primary-color to Tailwind, driven by themeColor setting

* Get rid of most uses of "energy" colors

* Change out the rest of the energy colors

* Tweak NetworkHealthIndicator light mode checkmarks

* Handful of other CSS tweaks while I'm here:
- remove the AppHeader bg and border
- pane margins
- better dark mode button styles

* Make Zoo logomark a badge

* A snapshot a day keeps the bugs away! 📷🐛 (OS: ubuntu)

* Re-run CI post-snapshots

* A snapshot a day keeps the bugs away! 📷🐛 (OS: ubuntu)

* Retrigger CI

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Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

src/components/UserSidebarMenu.tsx

@@ -154,10 +154,9 @@ const UserSidebarMenu = ({ user }: { user?: User }) => {
                   icon={{
                     icon: faSignOutAlt,
                     className: 'p-1',
-                    bgClassName: 'bg-destroy-80',
+                    bgClassName: '!bg-transparent',
                     size: 'sm',
-                    iconClassName:
-                      'text-destroy-20 group-hover:text-destroy-10 hover:text-destroy-10',
+                    iconClassName: '!text-destroy-70',
                   }}
                   className="border-transparent dark:border-transparent hover:border-destroy-40 dark:hover:border-destroy-60 hover:bg-destroy-10/20 dark:hover:bg-destroy-80/20"
                   data-testid="user-sidebar-sign-out"