<style type="text/css">

/* =================================================
  DEFAULTS WORDPRESS ADMIN DARK DASHBOARD DARK THEME
---------------------------------------------------- */

/* Bring back colors to the images */
.wp-admin #wpbody img {
  background: white;
}

/* Gutenberg bring it back */
.block-editor-page #wpbody {
  filter: unset;
}
/* Gutenberg topbar */
.block-editor-page .interface-interface-skeleton__header {
  filter: invert(0.88) hue-rotate(188deg);
}
.block-editor-page .is-primary {
  color: black !important;
}

/* Gutenberg sidebars */
.block-editor-page .interface-interface-skeleton__sidebar,
.block-editor-page .interface-interface-skeleton__secondary-sidebar {
  filter: invert(0.85) hue-rotate(185deg);
}

/* Gutenberg Content - Manual colors */
.block-editor-page .editor-styles-wrapper {
  background: #ffffff;
}

/* Gutenberg Links */
.block-editor-page .editor-styles-wrapper a {
}

/* Gutenberg Metaboxes - Bellow content */
.block-editor-page .edit-post-layout__metaboxes {
  border-top: 0px;
  background-color: #262626;
}

#adminmenu, #adminmenu .wp-submenu, #adminmenuback, #adminmenuwrap {
background-color: #1f1f1f;
}

#wpadminbar {
background: #1f1f1f;
}

<style type="text/css">