....Or better yet, the full 20 rosary.
Are you talking about the Glow-in-the-Dark mysteries that somebody made up out of whole cloth?
Soon we may have an an Eleventh Commandment or the Ninth Beatitude, such as: Blesssed are the muslims for they resisted those nasty proselytizing Crusaders (including St Francis of Assisi); “May St John the Baptist protect Islam (JPII the Great)”
The Luminous mysteries are optional. Many traditionalists prefer the 15 decade; it corresponds with the 150 Psalms.