Thanks, Paul.
Will add for everyone here that of course using bitmap graphics files with %bm instead of icons %ic works same way. This could be more useful because making icons could be cumbersome and they are standard size 16x16 or 32x32 while %bm could be any size.
Also by some reason %ic is not transparent if you use background in the main window.
( see large white space around red dot). I tried with SCION editor from FTN95 compiler directory to make empty space of bullet image transparent but did not succeed with first couple attempts, not really trying hard. So i cut the bullet out of larger image file and used %bm instead of %ic which looks much better. Of course with squared images all will look flawless. Same flawless result can be obtained with editing red dot bitmap, adding pink background there.