Seed drand48 for better color randomization

Author: bachonk

UIImageView+Letters/UIImageView+Letters.m

@@ -114,6 +114,8 @@ - (UIFont *)fontForFontName:(NSString *)fontName {
 
 - (UIColor *)randomColor {
 
+    srand48(arc4random());
+    
     float red = 0.0;
     while (red < 0.1 || red > 0.84) {
         red = drand48();