For 10 points, name this British painter of Sarah Siddons as the Tragic Muse, the first president of the Royal Academy.
A study on the differences between the Dulwich and Huntington versions of this artist's most famous painting revealed that the title figure's dress was originally blue rather than yellow. A fortune teller points her right forefinger at the palm of a boy in one of his pictures of young children, a series that also includes one where an infant in a mob hat is being painted by a child in a red robe titled Infant Academy. The title figure of one of his paintings pours an offering into a smoke-emitting tripod and is offered a wreath by one of the Three Graces, which appear to be coming to life.  One of his portraits depicts a woman enthroned next to a mysterious figure holding a chalice. This artist, who painted an aforementioned portrait of Lady Sarah Bunbury argued against copying subjects exactly as they appear in nature as part of his "Grand Style," which he discussed in his Seven Discourses on Art.  For 10 points, name this British painter of Sarah Siddons as the Tragic Muse, the first president of the Royal Academy.
A study on the differences between the Dulwich and Huntington versions of this artist's most famous painting revealed that the title figure's dress was originally blue rather than yellow.
Joshua Reynolds