fix(ui): recolor tab text

### Explanation

_No response_

### Issue

Closes #1

### Attestations

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- [ ] I have read and agree to the [Community Guidelines](https://docs.nhcarrigan.com/community/guide/).
- [ ] My contribution complies with the [Contributor Covenant](https://docs.nhcarrigan.com/dev/covenant/).

### Dependencies

- [ ] I have pinned the dependencies to a specific patch version.

### Style

- [ ] I have run the linter and resolved any errors.
- [ ] My pull request uses an appropriate title, matching the conventional commit standards.
- [ ] My scope of feat/fix/chore/etc. correctly matches the nature of changes in my pull request.

### Tests

- [ ] My contribution adds new code, and I have added tests to cover it.
- [ ] My contribution modifies existing code, and I have updated the tests to reflect these changes.
- [ ] All new and existing tests pass locally with my changes.
- [ ] Code coverage remains at or above the configured threshold.

### Documentation

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### Versioning

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Reviewed-on: #2
Co-authored-by: Naomi Carrigan <commits@nhcarrigan.com>
Co-committed-by: Naomi Carrigan <commits@nhcarrigan.com>

public/assets/css/theme-witch.css

@@ -364,7 +364,8 @@
   
   /* Nav items - LIGHT text on dark background */
   #navbar .item, #navbar a.item, .ui.secondary.menu .item, .navbar .item {
-    color: var(--witch-moon) !important;
+    color: var(--witch-lavender) !important;
+    background-color: var(--witch-purple) !important;
     transition: all 0.3s ease;
   }
   
@@ -373,9 +374,9 @@
     color: white !important;
   }
   
-  #navbar .active.item, .ui.secondary.menu .active.item {
-    background-color: rgba(212, 165, 199, 0.4) !important;
-    color: white !important;
+  #navbar .active.item, .ui.secondary.menu .active.item {   
+    color: var(--witch-lavender) !important;
+    background-color: var(--witch-plum) !important;
   }
   
   /* Icons in navbar should also be light */