Examine source code of Pro Slate

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Pro Slate",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-001-9c6d74e14860e77ee6f8f43e824bff25.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(39, 62, 75)",
      "toolbar_text": "rgb(209, 210, 211)",
      "frame": "rgb(31, 40, 45)",
      "tab_background_text": "rgb(151, 171, 193)",
      "toolbar_field": "rgb(30, 46, 52)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(33, 45, 53)",
      "popup": "rgb(33, 45, 53)",
      "popup_text": "rgb(209, 210, 211)",
      "button_background_active": "rgb(36, 45, 48)",
      "button_background_hover": "rgb(66, 97, 113)",
      "icons": "rgb(125, 171, 199)",
      "ntp_background": "rgb(37, 48, 53)",
      "ntp_text": "rgb(218, 213, 211)",
      "popup_border": "rgb(51, 75, 89)",
      "sidebar_border": "rgb(110, 101, 153)",
      "sidebar_highlight_text": "rgb(150, 198, 227)",
      "sidebar_highlight": "rgb(39, 62, 75)",
      "sidebar_text": "rgb(226, 222, 222)",
      "sidebar": "rgb(31, 40, 45)",
      "tab_loading": "rgb(16, 223, 47)",
      "tab_selected": "rgb(47, 74, 89)",
      "tab_text": "rgb(241, 236, 236)",
      "toolbar_bottom_separator": "rgb(51, 75, 89)",
      "toolbar_field_border_focus": "rgb(78, 116, 136)",
      "toolbar_field_border": "rgb(31, 40, 45)",
      "toolbar_field_focus": "rgb(31, 40, 45)",
      "toolbar_field_highlight_text": "rgb(242, 238, 237)",
      "toolbar_field_highlight": "rgb(66, 97, 113)",
      "toolbar_field_text_focus": "rgb(241, 236, 236)",
      "toolbar_top_separator": "rgb(51, 75, 89)",
      "toolbar_vertical_separator": "rgb(60, 89, 105)"
    }
  }
}