Have you ever dyed clothing at home?

The overwhelming majority of my wardrobe is black and I hate how worn things start to look after enough washes. There is nothing technically wrong with most of my clothing, except that it isn’t as dark black as it once was, so I hate to send it to the donate pile so soon. I was thinking that maybe a refresher would save me the money of having to replace clothing items simply due to color loss… but I’ve heard that dying clothes at home is a nightmare. Is that true?