Examine source code of Pro Comfort

{
  "name": "Pro Comfort",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "simple.png"
    },
    "colors": {
      "frame": "rgba(36, 36, 36, 1)",
      "tab_background_text": "rgb(121, 121, 121)",
      "toolbar": "rgb(84, 140, 172)",
      "bookmark_text": "rgb(0, 0, 0)",
      "toolbar_field": "rgba(247, 242, 228, 1)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(124, 220, 255)"
    }
  }
}