Examine source code of Gradient (Original Theme)

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Gradient Theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left bottom"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(0, 0, 0)",
      "toolbar_text": "rgb(138, 0, 192)",
      "frame": "rgb(5, 162, 207)",
      "tab_background_text": "rgb(183, 183, 183)",
      "toolbar_field": "rgba(41, 2, 189, 0.57)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgba(140, 0, 219, 0.65)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(138, 0, 192)",
      "button_background_active": "rgba(255, 255, 255, 0.83)",
      "button_background_hover": "rgba(255, 255, 255, 0.31)",
      "icons": "rgb(85, 186, 214)",
      "ntp_background": "rgb(74, 0, 102)",
      "ntp_text": "rgb(255, 255, 255)",
      "popup_border": "rgb(138, 0, 192)",
      "sidebar_text": "rgb(138, 0, 192)",
      "sidebar": "rgb(0, 0, 0)",
      "toolbar_bottom_separator": "rgb(138, 0, 192)",
      "toolbar_field_border": "rgb(0, 12, 255)",
      "toolbar_top_separator": "rgb(138, 0, 192)",
      "tab_loading": "rgba(140, 0, 219, 0.65)"
    }
  }
}