Haha, have you done that? Me? I have. As a fan, I've done it may times. For example, last week, we had a project (actually, a homework) in which you need to draw in your sketchpad your own interpretation of art. What I drew was, the last scene in the last episode of Natsu no Koi wa Nijiiro ni Kagayaku, or simply, Natsu Niji, (the scene wherein they are looking up in the sky, and there's a rainbow) excluding Taiga, Shiori and Umi. Of course, not forgetting the most important part of the scene : the rainbow. It is said that a rainbow has 7 colors, right? In my case there was only 5, so there goes an example of an application of Arashi in real life. In my diary also, the schedule there has 5 colors, from Monday to Friday, in the order starting from Riidaa to MatsuJun.
I just can't help but apply them... *sigh*