Examine source code of pure red

{
  "name": "pure red",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Screen Shot 2020-07-06 at 09.50.55.png"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(240, 26, 26, 1)",
      "toolbar": "rgba(128, 56, 56, 1)",
      "toolbar_field_text": "rgba(240, 12, 12, 1)"
    }
  }
}