Examine source code of green.alpha.25

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "green.alpha.25",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-022-596dadc947cc0c2cc2a2b476e7938bd3.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(8, 8, 8, 0.58)",
      "toolbar_text": "rgb(196, 255, 5)",
      "frame": "rgb(65, 65, 65)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(4, 7, 7)",
      "tab_line": "rgb(196, 255, 5)",
      "popup": "rgb(51, 50, 50)",
      "popup_text": "rgb(255, 255, 255)",
      "tab_loading": "rgb(196, 255, 5)"
    }
  }
}