Examine source code of Blue Dark

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Blue Dark",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-030-0f935cfde055600d01a959c5c15353de.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(31, 37, 61)",
      "toolbar_text": "rgb(192, 186, 207)",
      "frame": "rgb(8, 11, 33)",
      "tab_background_text": "rgb(202, 202, 202)",
      "toolbar_field": "rgba(19, 21, 36, 0.63)",
      "toolbar_field_text": "rgb(198, 190, 193)",
      "tab_line": "rgb(250, 30, 78)",
      "popup": "rgba(28, 25, 36, 0.58)",
      "popup_text": "rgb(215, 226, 239)",
      "tab_loading": "rgb(250, 30, 78)"
    }
  }
}