Actually, this article from "Did You Know" is talking about making the hot chocolate taste better just by changing the color of the cup.
Hot chocolate tastes better in an orange cup. The color of the container you’re drinking from highly influences the way you think your drink tastes or how strong it is. Studies show people prefer hot chocolate when they drink it from cups that are orange or cream colored compared to drinking out of red or white cups, and the color of your cup can also influence how strong you think your coffee is. Source
Guess I have been doing it all wrong all this time, using any mug that was handy for my hot chocolate. Oh well...still taste good to me!
Coffee in the kitchen again, but you can have some hot chocolate if you wish.