xpi/content/css/panelmenucolor.css
@namespace url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);

@-moz-document url(chrome://browser/content/browser.xul){
	.panel-arrowcontent,
	.panel-subviews,
	.PanelUI-subView:not(#BMB_bookmarksPopup),
	#BMB_bookmarksPopup menupopup box,
	#ctraddon_BMB_bookmarksPopup[panelopen="true"] menupopup[placespopup=true] > hbox,
	#ctraddon_BMB_bookmarksPopup[panelopen="true"] #ctraddon_BMB_subscribeToPageSubmenuMenupopup,
	#main-window[fx52plus="true"] #ctraddon_BMB_bookmarksPopup[panelopen="true"] menupopup[placespopup=true] > hbox,
	#main-window[fx52plus="true"] #ctraddon_BMB_bookmarksPopup[panelopen="true"] #ctraddon_BMB_subscribeToPageSubmenuMenupopup {
	  background: linear-gradient(white, -moz-dialog 30px) !important;    
	}
	
	@media all and (-moz-windows-classic) {
		#PanelUI-footer-inner toolbarbutton:not(#PanelUI-quit):not(:-moz-any([disabled],[open],:active)):hover,
		panelview .toolbarbutton-1:not(:-moz-any([disabled],[open],:active)):hover,
		toolbarbutton.subviewbutton:not(:-moz-any([disabled],[open],:active)):hover,
		menu.subviewbutton:not(:-moz-any([disabled],:active))[_moz-menuactive],
		menuitem.subviewbutton:not(:-moz-any([disabled],:active))[_moz-menuactive],
		.share-provider-button:not(:-moz-any([disabled],[open],:active)):hover:not([checked="true"]),
		.widget-overflow-list .toolbarbutton-1:not(:-moz-any([disabled],[open],:active)):hover,
		.toolbaritem-combined-buttons:-moz-any(:not([cui-areatype="toolbar"]), [overflowedItem=true]) > toolbarbutton:not(:-moz-any([disabled],[open],:active)):hover {
		  background-color: #bbbbbb !important;
		}
		
		#PanelUI-popup toolbaritem,
		#downloadsPanel richlistitem,
		#identity-popup-securityView-header {
		  border-bottom-color: rgb(150, 150, 150) !important;
		}
		#PanelUI-popup toolbaritem:hover {
		  border-color: rgb(150, 150, 150) !important;
		}
		#PanelUI-popup toolbaritem separator {
		  background-color: rgb(150, 150, 150) !important;
		}
		#PanelUI-popup #PanelUI-footer,
		#identity-popup-securityView button,
		#identity-popup-security-expander:hover {
		  background-color: rgb(200, 200, 200) !important;
		}
		#PanelUI-popup #PanelUI-footer toolbarseparator,
		#downloadsPanel toolbarseparator,
		#identity-popup-security-expander .box-inherit.button-box {
		  border-left-color: rgb(150, 150, 150) !important;
		}
		#PanelUI-popup #PanelUI-footer-inner,
		#PanelUI-popup #PanelUI-footer-fxa,
		#downloadsPanel #downloadsFooter,
		#tracking-protection-container,
		#identity-popup .identity-popup-section {
		  border-top-color: rgb(150, 150, 150) !important;
		}
		#PanelUI-popup #PanelUI-footer-fxa:hover,
		#downloadsPanel #downloadsHistory:hover,
		#downloadsPanel richlistitem:hover,
		#identity-popup-securityView button:hover,
		#PanelUI-popup #PanelUI-contents .toolbarbutton-1:-moz-any(:hover:active,[checked],[open]) {
		  background-color: rgb(187, 187, 187) !important;
		}
		#PanelUI-popup .toolbarbutton-multiline-text {
		  padding: 1px !important;
		}
		.downloadsPanelFooterButton {
		  background-color: rgb(200, 200, 200) !important;
		}
	}
}