Tokyo Ghoul

This is my first theme for chrome. I am a big fan of Tokyo Ghoul and wanted to put together a theme for chrome based on it so hereā€¦
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manifest.json
{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "version": "1.0.0",
  "manifest_version": 2,
  "name": "Tokyo Ghoul",
  "theme": {
    "images": {
      "theme_frame": "theme_frame.png",
      "theme_tab_background": "theme_tab_background.png",
      "theme_toolbar": "theme_toolbar.png",
      "theme_ntp_background": "theme_ntp_background.png"
    },
    "colors": {
      "ntp_background": [
        204,
        204,
        204
      ],
      "ntp_text": [
        106,
        106,
        106
      ],
      "tab_text": [
        28,
        1,
        0
      ],
      "tab_background_text": [
        35,
        1,
        0
      ],
      "toolbar": [
        192,
        192,
        192
      ],
      "bookmark_text": [
        106,
        106,
        106
      ]
    },
    "tints": {
      "buttons": [
        -1,
        -1,
        1
      ]
    },
    "properties": {
      "ntp_background_alignment": "center",
      "ntp_background_repeat": "no-repeat"
    }
  }
}