Design: Add a background to the Sort Tools logo

src/pages/index.jsx

@@ -75,6 +75,9 @@ const IndexPage = ({featuredProjects = []}) => {
 									alt="A logo with the title “Sort Tools”"
 									className="sort-tools-logo"
 									width={500}
+									// HACK: This is yellow[200], but StaticImage doesn’t
+									//       support passing it as a variable.
+									backgroundColor="#ffc900"
 								/>
 							</ExternalLink>
 						</li>