Examine source code of motivation (dark)

{
  "name": "motivation (dark)",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "hec3.png"
    },
    "colors": {
      "frame": "rgba(41, 41, 41, 1)",
      "tab_background_text": "rgba(168, 168, 168, 1)",
      "toolbar": "rgba(71, 71, 71, 1)",
      "bookmark_text": "rgba(214, 214, 214, 1)",
      "toolbar_field": "rgba(41, 41, 41, 1)",
      "toolbar_field_text": "rgba(214, 214, 214, 1)"
    }
  }
}