Is there a keyboard shortcut to open your Downloads folder in Mac OS X?

I know the shortcuts for apps (command + shift + a), and utilities (command + shift + a), etc.

Is there one for the downloads folder? I tried (command + shift + d), but it seems that command is reserved for the desktop folder. I also tried created a custom keyboard shortcut in the keyboard preferences using (command + shift + d) but it still defaults to the desktop folder.

Any ideas?