diff --git a/ColorUtils/ColorUtils.m b/ColorUtils/ColorUtils.m
index 31c94ef..e7c6ac3 100644
--- a/ColorUtils/ColorUtils.m
+++ b/ColorUtils/ColorUtils.m
@@ -129,7 +129,7 @@ + (void)registerColor:(UIColor *)color forName:(NSString *)name
     
 #endif
 
-    [self standardColors][[name lowercaseString]] = color;
+    [self standardColors][name] = color;
 }
 
 + (instancetype)colorWithString:(NSString *)string