re: Angled dado?

Bentlyj - your signature line is so you!  Thank you for that added option.  I really need to learn "design software" as I tend to sketch out my thoughts on scrap paper, or when I get serious, I use graph paper.  The former in particular often presents me with "learning opportunities" 

Corelz125 - painting definitely changes things.  It appears they may want to do a design where the shelves angle down toward the back so no front lip will be needed.  We are going to keep a little space between the shelves and back to avoid dirt, etc getting trapped.  

Again- thank you everyone!