Examine source code of Better Blue

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Better Blue",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-001-9c6d74e14860e77ee6f8f43e824bff25.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(27, 113, 227)",
      "toolbar_text": "rgb(20, 21, 21)",
      "frame": "rgb(34, 101, 225)",
      "tab_background_text": "rgb(7, 7, 91)",
      "toolbar_field": "rgb(51, 125, 197)",
      "toolbar_field_text": "rgb(5, 5, 5)",
      "tab_line": "rgb(33, 65, 231)",
      "popup": "rgb(49, 109, 221)",
      "popup_text": "rgb(17, 17, 17)",
      "button_background_active": "rgb(31, 40, 206)",
      "button_background_hover": "rgb(31, 74, 206)",
      "icons_attention": "rgb(14, 14, 16)",
      "ntp_background": "rgb(37, 73, 231)",
      "ntp_text": "rgb(9, 9, 9)",
      "popup_border": "rgb(30, 27, 31)",
      "popup_highlight": "rgb(20, 20, 20)",
      "sidebar_border": "rgb(29, 153, 198)",
      "sidebar_highlight": "rgb(29, 153, 198)",
      "sidebar_text": "rgb(17, 17, 16)",
      "sidebar": "rgb(46, 94, 208)",
      "tab_background_separator": "rgb(15, 16, 15)",
      "tab_selected": "rgb(37, 70, 208)",
      "toolbar_field_border": "rgb(57, 41, 186)",
      "toolbar_field_text_focus": "rgb(32, 34, 45)",
      "tab_loading": "rgb(33, 65, 231)"
    }
  }
}