Sets the background of the weekends in month view to smoky white, customize it easily for your own needs.
// ==UserScript==
// @name Google Calendar with colored weekend days
// @namespace userscripts.org/user/swyter
// @description Sets the background of the weekends in month view to smoky white, customize it easily for your own needs.
// @match https://www.google.com/calendar/*
// @version 1.1
// @grant GM_addStyle
// ==/UserScript==
GM_addStyle(".mv-event-container td:nth-child(6), \
.mv-event-container td:nth-child(7) \
{ \
background-color: whitesmoke; \
border-left: 1px solid #ddd; \
} ");