Resource capacity information

After having not needing mrproject for a while, I am impressed with 
how it has improved.

With the ability to add resource percentages to the tasks, I was 
wondering if it is possible/simple/too-stupid-to-be-workable to have 
a way of indicating a resource is over commited.

My initial thoughts would be in gannt chart any tasks that move the 
a resource over 100 would have a different colour for the resource 
that is over-commited.

Thoughts anyone?

Regards,

Matthew