Examine source code of Soft strokes

{
  "theme": {
    "images": {
      "theme_frame": "Abstract_idea_header1.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Soft strokes",
  "manifest_version": 2,
  "description": "I like to make a soft header for this abstract Persona inspirated to summer..so here it is! :D Hope you like it ^^!\n\nCREDITS\n\n♦ \"hotblack_20060702_088.jpg\" by hotblack <a href=\"https://outgoing.prod.mozaws.net/v1/47575f8ac955a6c8ac03ec2fbe2da0d5155f57d83ba390c2883e92937ab0db47/http%3A//www.morguefile.com/archive/display/127614\" rel=\"nofollow\">http://www.morguefile.com/archive/display/127614</a>\n\n♦ \"kevinrosseel_25ABC.jpg\" by kevinrosseel <a href=\"https://outgoing.prod.mozaws.net/v1/4e623409bb0d1fa3e9c43ab6b00c677dd761492772dbdd02cfbb768b8fa7c634/http%3A//www.morguefile.com/archive/display/183567\" rel=\"nofollow\">http://www.morguefile.com/archive/display/183567</a>"
}