Examine source code of Classic curtain

{
  "name": "Classic curtain",
  "version": "1.0",
  "description": "Classic Curtain",
  "manifest_version": 2,
  "theme": {
    "images": {
      "theme_frame": "images/theme_frame.jpeg",
      "theme_toolbar": "images/theme_toolbar.png",
      "theme_tab_background": "images/theme_tab_background.png",
      "theme_ntp_background": "images/theme_ntp_background.png"
    },
    "colors": {
      "frame": [
        112,
        102,
        63
      ],
      "toolbar": [
        101,
        102,
        102
      ],
      "tab_text": [
        247,
        223,
        126
      ],
      "tab_background_text": [
        244,
        211,
        122
      ],
      "bookmark_text": [
        206,
        206,
        191
      ],
      "ntp_background": [
        255,
        255,
        255
      ],
      "ntp_text": [
        50,
        50,
        50
      ],
      "ntp_link": [
        6,
        55,
        116
      ],
      "button_background": [
        11,
        1,
        1,
        1
      ]
    },
    "tints": {
      "buttons": [
        0.11,
        0.97,
        0.76
      ]
    },
    "properties": {
      "ntp_background_alignment": "bottom",
      "ntp_background_repeat": "no-repeat"
    }
  }
}