The blood orange, renowned for its vibrant color due to anthocyanins, is a focus of increasing demand in the nutraceutical industry, with 'Tarocco' [C. sinensis (L.) Osbeck] being the most widespread variety. Current research sheds light on the genetic mechanisms underpinning anthocyanin production, such as the activation of the RUBY1 transcription factor and the importance of the MBW complex.