diff --git a/color/README.md b/color/README.md
index b711957..5a8cc47 100644
--- a/color/README.md
+++ b/color/README.md
@@ -1,4 +1,6 @@
 ```python
+for i,x in enumerate('RGYBMC'):globals()[x]=lambda s,i=i:f'\x1b[{91+i}m{s}\x1b[0m'
+
 for i,x in enumerate('rgybmcRGYBMC'):globals()[x]=lambda s,i=i:f'\x1b[{31+i//6*60+i%6}m{s}\x1b[0m'
 
 print(r('hello'), R('hello'))