Examine source code of Blue tech

{
  "name": "Blue tech",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "1234beta.png"
    },
    "colors": {
      "frame": "rgba(0, 43, 74, 0.54)",
      "tab_background_text": "rgba(52, 70, 77, 1)",
      "toolbar": "rgba(0, 0, 0, 0.54)",
      "bookmark_text": "rgba(0, 245, 245, 1)",
      "toolbar_field": "rgba(0, 255, 221, 0.51)",
      "toolbar_field_text": "rgba(255, 255, 255, 0.75)"
    }
  }
}