When I hear "Violet" the first thing comes to my mind is Duo's eyes...so the vision came rather easily, Heero being enchanted by Duo's eyes (*^3^*) Heero doesn't understand what it is, but he just happened to look into Duo's eyes and just can't take his eyes off his...and realizes his feelings for Duo. Something like that. (*6_6*) Aaaaah so Shojo Manga, but hey I like that kind of scenarios (^3^)