fix: adjust default config with new palettes

main.go

@@ -38,9 +38,29 @@ type BannerInfo struct {
 
 func init() {
 	config = Config{
-		ClearwebURL:  "https://example.com",
-		OnionURL:     "http://example.onion",
-		ColorThemes:  []string{"vibrant", "sunset", "ocean", "neon", "forest", "cosmic"},
+		ClearwebURL: "https://example.com",
+		OnionURL:    "http://example.onion",
+		ColorThemes: []string{
+			"vibrant",
+			"sunset",
+			"ocean",
+			"neon",
+			"cosmic",
+			"midnight",
+			"fire",
+			"pastel",
+			"earth",
+			"ice",
+			"autumn",
+			"cyberpunk",
+			"retro",
+			"monochrome",
+			"tropical",
+			"volcanic",
+			"aurora",
+			"desert",
+			"matrix",
+		},
 		MaxBanners:   50,
 		BannerWidth:  600,
 		BannerHeight: 120,
@@ -87,7 +107,7 @@ func main() {
 		NewTextData(config.ClearwebURL, defaultFontSize+4.0, false),
 	}
 
-	for range 10 {
+	for range 25 {
 		if err := genBanner(textData); err != nil {
 			log.Errorf("Error generating banner: %s", err)
 		}