Examine source code of My Blue Theme

{
  "manifest_version": 2,

  "applications": {
    "gecko": {
      "id": "my-blue-theme@mnp",
      "strict_min_version": "58.0"
    }
  },
  
    "name": "My Blue Theme ",
    "author": "mnp",
    "version": "7.3",
    "description": "My Blue Theme for Firefox",
    "icons": {
        "48": "icon.svg",
        "96": "icon.svg"
    },
    "theme": {
        "colors": {
            "tab_line": "#000000",
            "tab_background_text": "#00BFFF",
            "textcolor": "#00BFFF",
            "frame": "#1e1e1e",
            "accentcolor": "#323232",
            "tab_loading": "#415a66",
			"icons": "rgb(120, 219, 226, 0.9)", //"icons": "#d7d8da",
            "icons_attention": "#00bbff",

            "toolbar": "#00141f",
            "bookmark_text": "#00BFFF",
            "toolbar_text": "#00BFFF",
            "toolbar_top_separator": "#000c12",
            "toolbar_bottom_separator": "#000c12",
            "toolbar_vertical_separator": "rgba(28,28,28,0.2)",

            "toolbar_field": "rgba(0,0,0,0.7)",
            "toolbar_field_text": "#00BFFF",
            "toolbar_field_focus": "rgb(0,0,0)",
            "toolbar_field_border": "rgba(0,0,0,0.7)",
            "toolbar_field_separator": "rgba(55,90,105,0.2)",
            "toolbar_field_border_focus": "rgb(0,0,0)",

            "button_background_hover": "rgba(75, 100, 107, 0.8)",
            "button_background_active": "#4b646b",

            "popup": "#00141f",
            "popup_text": "#30D5C8",
            "popup_border": "#CD7F32",
            "popup_highlight": "#77b5d4",
            "popup_highlight_text": "#77b8d9",

            "ntp_text": "rgb(177,177,179)",
            "ntp_background": "rgb(27,27,29)",

            "sidebar": "#00141f",
            "sidebar_text": "#77b8d9",
            "sidebar_border": "#00293d",
            "sidebar_highlight": "#77b5d4",
            "sidebar_highlight_text": "#77b5d4"
        }
    }
}