First up this beautiful image by the Italian artist Lorenzo di Credi. It's titled A Boy in a Scarlet Cap.
Next a portrait of Gian Giacomo Caprotti, the pupil of Leonardo da Vinci. Also known by the nickname Salaì, meaning devil.
And finally a painting by the Flemish artist Bernard van Orley (for which we can't find the name xD). The painting appears to show a red-haired Mary and child Jesus, along with several other reddish-haired children. To add to the apparent redness the baby Jesus appears to be reaching for an orange.