Blue as default accent; slightly smaller swatches

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/shared/types.ts

@@ -74,7 +74,7 @@ export interface AppSettings {
 
 export const DEFAULT_SETTINGS: AppSettings = {
 	theme: "system",
-	accent: "indigo",
+	accent: "blue",
 	iconColors: "multi",
 	speedUnit: "MBps",
 	textSize: "default",

ui/src/app/tab-bar/tab-bar.ts

@@ -140,7 +140,7 @@ const CONCURRENCY_CHOICES = [2, 3, 4, 6, 8] as const;
                 <button
                   (click)="settings.setAccent(tone.value)"
                   [title]="tone.label"
-                  class="size-4 rounded-full border border-foreground/15"
+                  class="size-3.5 rounded-full border border-foreground/15"
                   [style.background-color]="tone.swatch"
                   [class.ring-2]="settings.accent() === tone.value"
                   [class.ring-foreground]="settings.accent() === tone.value"