Examine source code of MM.. FOOD

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "MM.. FOOD, MF DOOM theme :)",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right bottom"
      ],
      "additional_backgrounds_tiling": [
        "repeat-y"
      ]
    },
    "colors": {
      "toolbar": "rgba(255, 169, 82, 0)",
      "toolbar_text": "rgb(20, 180, 30)",
      "frame": "rgb(14, 14, 18)",
      "tab_background_text": "rgb(55, 100, 48)",
      "toolbar_field": "rgba(28, 74, 30, 0.5)",
      "toolbar_field_text": "rgb(255, 83, 83)",
      "tab_line": "rgb(17, 158, 3)",
      "popup": "rgb(72, 136, 88)",
      "popup_text": "rgb(159, 56, 56)",
      "tab_loading": "rgb(17, 158, 3)"
    }
  }
}