This little addon will display the items' level on their frames. No configuration required. It works on inspect frames too, showing inspected average item level.

Color tendencies code:

• Yellow: item's level is around average ilvl.
• Red: item's level is below average ilvl.
• Green: item's level is above average ilvl.

Note: color code on inspect frame works comparing each inspected item to your average ilvl.