Examine source code of Topograph Black

{
  "name": "Topograph Black",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "360_F_327284392_SbyXdLBE7klLoyt1OTCTHQVkt0F9wjkE.jpg"
    },
    "colors": {
      "frame": "rgba(235, 157, 23, 1)",
      "tab_background_text": "rgba(217, 147, 7, 1)",
      "toolbar": "rgba(66, 66, 66, 0.45)",
      "bookmark_text": "rgba(217, 147, 7, 1)",
      "toolbar_field": "rgba(255, 255, 255, 0.46)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(0, 0, 0, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a247edf1-f867-4466-a87a-0e8e8476526b}"
    }
  }
}