Examine source code of Deep Black Theme

{
  "manifest_version": 3,
  "name": "Deep Black Theme",
  "version": "1.0",
  "description": "A sleek matte black theme for Firefox",
  "browser_specific_settings": {
    "gecko": {
      "id": "deep-black-theme@yourdomain.com"
    }
  },
  "theme": {
    "colors": {
      "toolbar": [
        10,
        10,
        10
      ],
      "tab_text": [
        10,
        10,
        10
      ],
      "tab_background_text": [
        160,
        160,
        160
      ],
      "bookmark_text": [
        224,
        224,
        224
      ],
      "ntp_background": [
        10,
        10,
        10
      ],
      "ntp_text": [
        224,
        224,
        224
      ],
      "button_background": [
        255,
        255,
        255
      ],
      "frame": [
        10,
        10,
        10
      ],
      "frame_inactive": [
        34,
        34,
        34
      ],
      "frame_incognito": [
        10,
        10,
        10
      ],
      "frame_incognito_inactive": [
        34,
        34,
        34
      ],
      "background_tab": [
        34,
        34,
        34
      ],
      "background_tab_inactive": [
        34,
        34,
        34
      ],
      "background_tab_incognito": [
        34,
        34,
        34
      ],
      "background_tab_incognito_inactive": [
        34,
        34,
        34
      ],
      "tab_background_text_inactive": [
        128,
        128,
        128
      ],
      "tab_background_text_incognito": [
        200,
        200,
        200
      ],
      "tab_background_text_incognito_inactive": [
        150,
        150,
        150
      ],
      "omnibox_background": [
        34,
        34,
        34
      ],
      "omnibox_text": [
        224,
        224,
        224
      ]
    },
    "tints": {
      "buttons": [
        0,
        0,
        0.15
      ]
    },
    "properties": {
      "ntp_background_alignment": "center",
      "ntp_background_repeat": "no-repeat"
    }
  }
}