Examine source code of Rainbow clouds

{
  "name": "Rainbow clouds",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "cloud-sky-pastel-rainbow-colored-background-means-color-gradation-abstract-cloud-sky-pastel-rainbow-.jpg"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(255, 0, 0, 1)",
      "bookmark_text": "rgba(255, 123, 0, 1)",
      "toolbar_field_text": "rgba(242, 255, 0, 1)"
    }
  }
}