Examine source code of marson-blue

{
  "name": "Marek",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "bg.png"
    },
    "colors": {
      "toolbar": "rgba(143, 159, 179, 1)",
      "toolbar_field": "rgba(191, 198, 207, 1)",
      "toolbar_field_text": "rgba(3, 23, 173, 1)",
      "frame": "rgba(117, 135, 158, 1)",
      "tab_background_text": "rgba(82, 120, 171, 1)",
      "bookmark_text": "rgba(255, 255, 255, 1)"
    }
  }
}