Basically what I did was Change the robot notification icon no-building-material-icon.png from the triangle image to a tiny square so there should be almost zero performance hit
could maybe even be considered an optimization since the file could be even smaller from ~800btyes to under 100bytes although a trivial one...
The only issue is that it also changes the alert in the corner.

Splitting the two in would also mean changing the flash color would be simple as well as the size based on the map zoom level so it would be a form fitting block of sorts.