Examine source code of DeepSea

{
  "name": "DeepSea",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "Capture.PNG"
    },
    "colors": {
      "frame": "rgba(10, 27, 36, 1)",
      "tab_background_text": "rgba(33, 204, 198, 1)",
      "toolbar": "rgba(21, 49, 61, 1)",
      "bookmark_text": "rgba(235, 143, 30, 1)",
      "toolbar_field": "rgba(10, 27, 36, 1)",
      "toolbar_field_text": "rgba(28, 156, 156, 1)",
      "tab_line": "rgba(237, 151, 31, 0.47)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{90add9f9-7ec9-499f-88c4-644c3ddb22f7}"
    }
  }
}