Examine source code of Pusheen Pink

{
  "manifest_version": 2,
  "version": "3.1resigned1",
  "name": "Pusheen Pink",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(251, 140, 162, 0.13)",
      "bookmark_text": "rgb(76, 62, 101)",
      "frame": "rgb(241, 212, 208)",
      "tab_background_text": "rgb(119, 79, 141)",
      "toolbar_field": "rgba(255, 255, 255, 0.53)",
      "toolbar_field_text": "rgb(76, 62, 101)",
      "tab_line": "rgb(251, 140, 162)",
      "popup": "rgb(247, 238, 239)",
      "popup_text": "rgb(76, 62, 101)",
      "tab_loading": "rgb(251, 140, 162)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{fb2b668e-9e1b-43f0-b28f-085a0b815b3f}"
    }
  }
}