Examine source code of Venus <3

{
  "name": "Venus",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "tumblr_b6a1534d30b3509d71494a658f6ad4ea_a0085160_540.jpg"
    },
    "colors": {
      "frame": "rgba(255, 255, 255, 1)",
      "tab_background_text": "rgba(245, 191, 191, 1)",
      "toolbar": "rgba(255, 224, 224, 0.53)",
      "bookmark_text": "rgba(250, 140, 140, 0.56)",
      "toolbar_field": "rgba(255, 255, 255, 0.72)",
      "toolbar_field_text": "rgba(0, 0, 0, 0.52)",
      "tab_line": "rgba(199, 137, 137, 0.44)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{957a6313-5be2-4486-83b1-2843a4e3d0a1}"
    }
  }
}