Examine source code of Glass Color

{
  "manifest_version": 2,
  "version": "5",
  "name": "Glass Color",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat-x"
      ]
    },
    "colors": {
      "toolbar": "rgba(255, 255, 255, 0.75)",
      "toolbar_text": "rgb(0, 2, 7)",
      "frame": "rgb(255, 255, 255)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(0, 2, 7)",
      "tab_line": "rgba(252, 246, 247, 0)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(0, 2, 7)",
      "popup_border": "rgba(0, 6, 6, 0.37)",
      "tab_loading": "rgb(17, 191, 194)",
      "toolbar_field_border_focus": "rgb(0, 2, 7)",
      "toolbar_field_border": "rgb(0, 2, 7)",
      "toolbar_field_focus": "rgb(255, 255, 255)",
      "toolbar_field_text_focus": "rgb(0, 2, 7)"
    }
  }
}