Hues of the Rainbow

Spoiler.

Logo

... or not.

↓

http://www.flickr.com/photos/sajo0o/4144470134/

http://www.flickr.com/photos/fiumeazzurro/5438671039/

I don't even know, but I found this in Japanese forum for Saint Oniisan. http://yuzuru.2ch.net/test/read.cgi/comic/1305303027/ （Link to the Japanese entry http://huesoftherainbow2.blogspot.com/2011/05/blog-post_7104.html ）