You don’t need to be Taylor Swift to love yourself some red. And you don’t need to be a genius to see the beauty of a red front door. Although in that second case, it might not hurt. During his time at Princeton, as folklore has it, Albert Einstein painted his front door red so he could remember which home was his. Surely it worked, and gave the house a bit more curb appeal in the process. But one wonders if Einstein knew of the long tradition in which he was immersing himself.