Examine source code of 2nd Grogogoll theme

{
  "name": "2nd Grogogoll theme",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "HVDP7644-1.JPG"
    },
    "colors": {
      "frame": "rgba(175, 189, 222, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(230, 209, 209, 1)",
      "bookmark_text": "rgba(87, 32, 32, 1)",
      "toolbar_field": "rgba(175, 222, 180, 1)",
      "toolbar_field_text": "rgba(24, 143, 17, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{99d5835b-9afc-41cf-aa3f-61cb191f84d5}"
    }
  }
}