Blue accent to match the blue icon (today ring, month arrows)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

android/org/gingercal/MainActivity.java

@@ -159,7 +159,7 @@ public class MainActivity extends Activity implements MonthView.Listener {
     }
 
     TextView navArrow(String label, final int delta) {
-        TextView b = App.text(this, label, 20, 0xFFD66E2A); // « »: Latin-1, always in the 2.3 font
+        TextView b = App.text(this, label, 20, 0xFF3D8EF0); // « »: Latin-1, always in the 2.3 font
         b.setGravity(17 /* Gravity.CENTER */);
         int sel = App.sysDrawable(this, "list_selector_background");
         if (sel != 0) b.setBackgroundResource(sel); // press highlight