UI refinements (#2859)

## Description:

UI Refinements requested by @evanpelle  check https://ui.openfront.dev

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

## Please put your Discord username so you can be contacted if a bug or
regression is found:

w.o.n

src/client/graphics/layers/SettingsModal.ts

@@ -187,7 +187,7 @@ export class SettingsModal extends LitElement implements Layer {
 
     return html`
       <div
-        class="modal-overlay fixed inset-0 bg-black/50 backdrop-blur-xs z-2000 flex items-center justify-center p-4"
+        class="modal-overlay fixed inset-0 bg-black/60 backdrop-blur-xs z-2000 flex items-center justify-center p-4"
         @contextmenu=${(e: Event) => e.preventDefault()}
       >
         <div