Examine source code of James

{
  "name": "James",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Screenshot_20200731-044051.png"
    },
    "colors": {
      "frame": "rgba(113, 166, 20, 1)",
      "tab_background_text": "rgba(65, 150, 16, 1)",
      "toolbar": "rgba(107, 39, 39, 1)",
      "bookmark_text": "rgba(62, 81, 143, 1)",
      "toolbar_field": "rgba(89, 24, 24, 1)",
      "toolbar_field_text": "rgba(115, 48, 48, 1)"
    }
  }
}