Examine source code of Fall Leaves2

{
  "name": "Fall Is Here",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Untitled design(8).png"
    },
    "colors": {
      "frame": "rgba(167, 143, 0, 1)",
      "tab_background_text": "rgba(118, 26, 26, 1)",
      "bookmark_text": "rgba(62, 41, 24, 1)",
      "toolbar_field": "rgba(167, 143, 0, 1)",
      "toolbar_field_text": "rgba(62, 41, 24, 1)"
    }
  }
}