To be clear, we only did a cursory search, but I was surprised to know that Holi (also known as the Festival of Colors or the Festival of Love) is a holiday that celebrates the coming of spring by about a billion people as one of the two major Hindu celebrations in the year. While there are not a billion followers of Hindu, due to its colorful and joyful nature, it has taken on a wider appeal throughout India and the surrounding regions. Apparently, part of the celebration includes coating one another in various and vibrant colors.
Despite my new insight, I continued to just wish people a "Happy Friday!" It just felt too confusing to say "Happy Holi" to people. Still, I certainly enjoyed learning more about it.