Examine source code of Purple Night Theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Purple Night",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(205, 35, 185, 0.15)",
      "toolbar_field": "rgba(99, 35, 205, 0.26)",
      "toolbar_field_text": "rgb(240, 192, 228)",
      "tab_line": "rgb(205, 35, 185)",
      "popup": "rgb(108, 0, 114)",
      "popup_text": "rgb(240, 192, 228)",
      "tab_loading": "rgb(205, 35, 185)",
      "tab_background_text": "rgb(150, 96, 239)",
      "ntp_background": "rgb(25, 0, 66)",
      "ntp_text": "rgb(255, 250, 250)",
      "frame": "rgb(8, 11, 33)",
      "icons": "rgb(210, 128, 255)",
      "bookmark_text": "rgb(210, 155, 255)",
      "sidebar": "rgb(108, 0, 114)",
      "sidebar_text": "rgb(240, 192, 228)"
    }
  }
}