Examine source code of minimilistic DARK

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "minimilistic DARK",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg",
        "images/1.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center top",
        "left top"
      ],
      "additional_backgrounds_tiling": [
        "repeat",
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(129, 26, 156, 0.66)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(129, 26, 156)",
      "tab_background_text": "rgb(0, 0, 0)",
      "toolbar_field": "rgba(255, 255, 255, 0.61)",
      "toolbar_field_text": "rgb(127, 35, 151)",
      "tab_line": "rgba(255, 255, 255, 0)",
      "popup": "rgba(129, 26, 156, 0.67)",
      "popup_text": "rgb(255, 255, 255)",
      "ntp_background": "rgba(85, 8, 106, 0.72)",
      "popup_border": "rgba(255, 255, 255, 0)",
      "tab_loading": "rgb(129, 26, 156)"
    }
  }
}