Examine source code of Sixth House

{
  "name": "Sixth House",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "tumblr_pzbzhtNS9S1s30mt6o2_1280.png"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(148, 148, 148, 1)",
      "toolbar_field": "rgba(189, 189, 189, 0.42)",
      "toolbar_field_text": "rgba(112, 112, 112, 0.66)",
      "tab_line": "rgba(102, 102, 102, 1)"
    }
  }
}