Donald Duck 90th Anniversary Colour-Changing Loungefly Mini Backpack. Who's got the sweetest disposition? Not Donald Duck, for sure. His face on this Loungefly Mini Backpack turns red with frustration when exposed to the UV rays of the sun. Though Donald may get temperamental when carrying around your daily essentials, he's sure to cool down when you get home again. It's all in celebration of his 90th Anniversary, but you might not want to mention his age... Wak!