Examine source code of material matters

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "material matters",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "repeat-x"
      ]
    },
    "colors": {
      "toolbar": "rgba(211, 240, 211, 0.43)",
      "toolbar_text": "rgb(0, 255, 16)",
      "frame": "rgb(2, 25, 4)",
      "tab_background_text": "rgb(255, 64, 0)",
      "toolbar_field": "rgba(212, 216, 207, 0.12)",
      "toolbar_field_text": "rgb(0, 255, 16)",
      "tab_line": "rgb(255, 64, 0)",
      "popup": "rgb(84, 84, 89)",
      "popup_text": "rgb(0, 255, 16)",
      "tab_loading": "rgb(255, 64, 0)"
    }
  }
}