Forget a hard, not-so-cuddly greenish exoskeleton or whatever...a bug-type Eeveelution needs to be a fluffy puffy moth.

The color scheme was inspired by the Rosy Maple Moth, hence the Japanese name, ローシー (Roushii=Rosy) (A lot of the Eeveelutions have Japanese names based on English words...for example, Vaporeon is シャワーズ (Showaazu=Showers), Jolteon is サンダース (Sandaasu=Thunders), and Umbreon is--I kid you not--ブラッキー (Burakkii=Blacky).)