Examine source code of blue gruvbox

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "blue gruvbox",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-002-609370e89a219e0548ac5ef6b4a7dd2e.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(40, 40, 40)",
      "toolbar_text": "rgb(69, 133, 136)",
      "frame": "rgb(29, 32, 33)",
      "tab_background_text": "rgb(189, 174, 147)",
      "toolbar_field": "rgb(60, 56, 54)",
      "toolbar_field_text": "rgb(249, 245, 215)",
      "tab_line": "rgb(131, 165, 152)",
      "popup": "rgb(40, 40, 40)",
      "popup_text": "rgb(142, 192, 124)",
      "button_background_hover": "rgba(204, 36, 29, 0.2)",
      "popup_border": "rgb(142, 192, 124)",
      "tab_text": "rgb(69, 133, 136)",
      "tab_loading": "rgb(131, 165, 152)"
    }
  }
}