Check out what I have so far. All of it is in the ‘Month Layout’ glide table and tab. The other tab and sheets are from another thing I was working on awhile back.
The entire month layout sheet builds the calendar. It only uses 37 rows and allows paging through all months, so it adapts dynamically. It’s a little quirky at the moment until you click a button first to initially set the increment value. Then it works fine after that. I have it set to highlight the current day and there is CSS for day and night colors that I’m not using, but it could be expanded to have options for all of your shift colors. I’m thinking with the right relations/lookups added, you could probably lookup an employee/date in another sheet to see what the shift is and set the current color for each day.
Enjoy!