Examine source code of Fall California Sunset

{
  "name": "Fall California Sunset",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "sunset4.jpg"
    },
    "colors": {
      "frame": "rgba(76, 151, 222, 0.61)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(255, 169, 41, 0.61)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(250, 240, 208, 1)",
      "toolbar_field_text": "rgba(130, 0, 0, 0.65)"
    }
  }
}