I wonder why nobody thought of this before!  Well, maybe somebody has...but I am yet to come across an 'illuminated sink'.

Or, consider an 'illuminated bathtub'!

I think these are cool, practical and of course, expensive! The sink costs $250  and the tub costs $1500!

Update: The sink/tub is made of polyethylene and it can be fitted with either a multicolor, programmable LED light or with a regular light fitting.  Thanks to a guest (from Canada?) for commenting on this topic!