Examine source code of White on Black

{
  "theme": {
    "images": {
      "theme_frame": "Horse.jpg"
    },
    "colors": {
      "frame": "#0a0000",
      "tab_background_text": "#f7efef"
    }
  },
  "version": "2.0",
  "name": "White on Black",
  "manifest_version": 2,
  "description": "In old Westerns you were permitted to kiss your horse, but never your girl. ~ Gary Cooper\n\nTAGS:\n     Horses, Jumping, White, Black, Mammals, Animals, Nature"
}