Examine source code of Nightly Theme for Coders

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Nightly Theme for Coders",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-030-0f935cfde055600d01a959c5c15353de.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(31, 34, 61)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(8, 11, 33)",
      "tab_background_text": "rgb(0, 145, 169)",
      "toolbar_field": "rgb(26, 27, 32)",
      "toolbar_field_text": "rgb(0, 255, 250)",
      "tab_line": "rgb(0, 255, 250)",
      "popup": "rgb(31, 34, 61)",
      "popup_text": "rgb(215, 226, 239)",
      "button_background_active": "rgb(164, 164, 164)",
      "button_background_hover": "rgb(82, 82, 82)",
      "icons": "rgb(3, 255, 248)",
      "ntp_background": "rgb(23, 25, 45)",
      "ntp_text": "rgb(255, 255, 255)",
      "popup_border": "rgb(191, 191, 191)",
      "tab_background_separator": "rgb(3, 255, 248)",
      "tab_loading": "rgb(114, 255, 252)",
      "tab_selected": "rgb(56, 59, 93)",
      "tab_text": "rgb(255, 255, 255)",
      "toolbar_bottom_separator": "rgb(108, 108, 108)",
      "toolbar_top_separator": "rgb(162, 162, 162)",
      "toolbar_vertical_separator": "rgb(0, 138, 135)"
    }
  }
}