Examine source code of Blacksmith

{
  "theme": {
    "images": {
      "theme_frame": "newheaderww"
    },
    "colors": {
      "frame": "#706262",
      "tab_background_text": "#0004ff"
    }
  },
  "version": "2.0",
  "name": "Blacksmith",
  "manifest_version": 2
}