It does show the date when you hover your mouse over it.
Right click the clock for a menu with customizing options: size, colors, hourly chime, and an option to hide the tray clock.
There are also other things accessible from the menu, such as displaying system uptime , copying time, date, or system uptime to the clipboard, access to additional tools (timer, stopwatch, todo list)
The border matches your Windows theme. Change the color of your theme and the border will change color to match it. Mine is purple.