Examine source code of Dim theme

{
  "manifest_version": 2,
  "version": "2.5.71",
  "name": "Main Theme 2.0",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center bottom"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(32, 27, 44, 0.54)",
      "toolbar_text": "rgb(255, 0, 0)",
      "frame": "rgb(22, 54, 75)",
      "tab_background_text": "rgb(148, 157, 173)",
      "toolbar_field": "rgb(0, 0, 0)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(255, 0, 0)",
      "popup": "rgb(0, 154, 255)",
      "popup_text": "rgb(0, 0, 0)",
      "button_background_active": "rgb(41, 0, 255)",
      "button_background_hover": "rgb(78, 67, 132)",
      "frame_inactive": "rgb(41, 0, 255)",
      "icons": "rgb(255, 255, 255)",
      "ntp_background": "rgb(0, 0, 0)",
      "ntp_text": "rgb(40, 0, 255)",
      "popup_border": "rgb(0, 0, 0)",
      "popup_highlight_text": "rgb(43, 0, 255)",
      "sidebar_border": "rgb(0, 0, 0)",
      "toolbar_field_separator": "rgb(0, 0, 0)",
      "toolbar_top_separator": "rgb(255, 255, 255)",
      "tab_loading": "rgb(255, 0, 0)"
    }
  }
}