base16 solarized light is a light theme

src/palettes/base16/_base16-solarized-light.scss

@@ -1,4 +1,5 @@
 /* Solarized Light by Ethan Schoonover (http://ethanschoonover.com/solarized) */
+/* rs-theme-is-dark: FALSE */
 
 $base00: #fdf6e3;
 $base01: #eee8d5;