/* Replace the button background-colors with a glow effect */
/* Edit the color choices how you see fit */


/* Make backgrounds transparent */
.urlbar-icon,
.urlbar-icon-wrapper,
toolbar .toolbarbutton-1,
#tabbrowser-tabs toolbarbutton,
toolbar toolbarbutton > .toolbarbutton-icon,
toolbar toolbarbutton > .toolbarbutton-badge-stack,
.titlebar-button{ background-color: transparent !important; }

.close-icon{ fill-opacity: 0 !important; }

/* Glow effects on hover */
.close-icon:hover,
.urlbar-history-dropmarker:hover,
#page-action-buttons > .urlbar-icon:hover,
.urlbar-icon-wrapper:hover > .urlbar-icon,
toolbar .toolbarbutton-1:not([disabled]):hover .toolbarbutton-icon,
#TabsToolbar toolbarbutton:not([disabled]):hover .toolbarbutton-icon,
toolbar #downloads-button:hover #downloads-indicator-anchor{ 
  filter: brightness(2) drop-shadow(0 0 2px cyan) drop-shadow(0 0 0 cyan)
}

/* Active states and close window button hover state */
#titlebar .titlebar-buttonbox > .titlebar-close:hover > .toolbarbutton-icon,
.close-icon:active,
.urlbar-history-dropmarker:active,
#page-action-buttons > .urlbar-icon:active,
#page-action-buttons > .urlbar-icon[open],
.urlbar-icon-wrapper:active > .urlbar-icon,
.urlbar-icon-wrapper[open] > .urlbar-icon,
toolbar toolbarbutton:not([disabled]):active .toolbarbutton-icon,
toolbar toolbarbutton:not([disabled])[open] .toolbarbutton-icon,
#TabsToolbar toolbarbutton:not([disabled]):active .toolbarbutton-icon,
toolbar #downloads-button:active #downloads-indicator-anchor,
toolbar #downloads-button[open] #downloads-indicator-anchor{ 
  filter: brightness(2) drop-shadow(0 0 2px red) drop-shadow(0 0 0 yellow)
}