Examine source code of The Todoist Theme

{
  "name": "The Todoist Theme",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "tdi.jpeg"
    },
    "colors": {
      "frame": "rgba(214, 0, 0, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar_field_text": "rgba(150, 0, 0, 1)"
    }
  }
}