Cute Yellow!! The word butterfly came from the English word Buttorfleoge. Perhaps because, in mediaeval times, butterflies could be seen hovering around butter-churns or that their excrement is yellowish in colour.
I found some Cool facts about them; Butterfly wings are transparent. Butterflies taste with their feet. Butterflies live on an all-liquid diet. Butterflies can’t fly if they’re cold. Butterflies live just 2-4 weeks, usually. Butterflies are near-sighted, but they can see and discriminate a lot of colours.