lighten pattern (#1326)

## Description:

Make territory pattern less dark, from .2 => .125 darker. It's still
very legible and a bit less harsh.

I think we should err on the side of being too light, because we can
always darken it, but people will be upset if we ever lighten it in the
future since they'll feel rug pulled after paying for the pattern.

## Please complete the following:

.2
<img width="496" alt="Screenshot 2025-07-02 at 10 53 44 AM"
src="https://github.com/user-attachments/assets/0ee29bc0-ec05-482d-bfa7-b032cef57eba"
/>

.125
<img width="577" alt="Screenshot 2025-07-02 at 11 09 55 AM"
src="https://github.com/user-attachments/assets/83dcac0d-169b-47a4-bf6b-d4778ca496ba"
/>

.1
<img width="594" alt="Screenshot 2025-07-02 at 10 54 47 AM"
src="https://github.com/user-attachments/assets/893a18f2-9e56-464e-b072-c2bd7f464f02"
/>

- [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
- [x] I understand that submitting code with bugs that could have been
caught through manual testing blocks releases and new features for all
contributors

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

src/client/graphics/layers/TerritoryLayer.ts

@@ -317,7 +317,9 @@ export class TerritoryLayer implements Layer {
         const baseColor = this.theme.territoryColor(owner);
 
         const decoder = owner.patternDecoder();
-        const color = decoder?.isSet(x, y) ? baseColor.darken(0.2) : baseColor;
+        const color = decoder?.isSet(x, y)
+          ? baseColor.darken(0.125)
+          : baseColor;
         this.paintTile(tile, color, 150);
       }
     }