Here are some mockups showing basically what I want:
Normal view:

The number after the ± is your net income.
Notice that the ± shows green if you are positive, and red if you are negative.
Also notice that there are little icons on the side indicating what each number is.
Supply almost full:

In a perfect world, the supply indicator would get redder the closer it got to being full, but I wouldn't complain if it just stayed white the entire time.
Tooltip mouseover:

This is what you get when you put your mouse over the indicators for energy and metal. Shows net, incoming and outgoing.
Hopefully this is pretty clear. Would anyone be willing to help me out? Will exchange sexual favors and love you long time.