I haven't found yet

There are 2 things to do to help pilots and also to have a better visual effect while on approach :
1° "paint" the _Sat with a distinct concrete grey colour
2° use some concrete texture on the _Mask for this area
Don't forget to add lights, the runways_PAPI things, navilights and runway_edgelights.
Of course, if you are building more crude airstrips, you will have to add objects such as barrels, small buildings ...along the runway to get some visual hints about the place where to land ... like in RL.