Add custom theming

main.go

@@ -23,7 +23,7 @@ func main() {
 		showAll        = flag.Bool("all", defaults.ShowAll, "show all open PRs in --repo, not only PRs assigned to you")
 		limit          = flag.Int("limit", defaults.Limit, "maximum open PRs to load (1-1000)")
 		endpoint       = flag.String("endpoint", defaults.Endpoint, "GitHub GraphQL endpoint")
-		theme          = flag.String("theme", defaults.Theme, "color theme: dark, light, high-contrast, or no-color")
+		theme          = flag.String("theme", defaults.Theme, "color theme name (including custom, catppuccin, gruvbox, one-dark-pro, and github)")
 		foldResolved   = flag.Bool("fold-resolved", defaults.Display.FoldResolved, "start resolved threads folded")
 		listWidth      = flag.Int("thread-list-width", defaults.Display.ThreadListWidthPercent, "thread list width as terminal percentage (20-60)")
 		dashboardMode  = flag.String("dashboard-mode", defaults.Display.DashboardMode, "dashboard navigation: intermediate or hotkey")
@@ -109,7 +109,7 @@ func main() {
 		}
 		owner, name = parts[0], parts[1]
 	}
-	if err := applyTheme(config.Theme); err != nil {
+	if err := applyTheme(config.Theme, config.CustomTheme); err != nil {
 		exitf("configuration: %v", err)
 	}
 	token, err := resolveToken(config.Endpoint)