Suggestion: Show an alert for unprofitable buildings

My suggestion is to put one of those "top of screen" alerts when a building is "unprofitable", ie. revenue less material, power, and fuel costs is negative. I find that constantly having to check how profitable my buildings are feels like busywork, and I would much rather have to the game tell me there might be a problem and I have to decide what to do about it rather than "am I paying enough attention to my buildings".