only set style rule properties if not null (fixes tests)
only set style rule properties if not null (fixes tests)

ceseale/tangram,ceseale/tangram,TitoAgudelo/tangram,taylorhxu/tangram,tangrams/tangram,TitoAgudelo/tangram,zerebubuth/tangram,ceseale/tangram,taylorhxu/tangram,rosamcgee/tangram,zerebubuth/tangram,xvilan/tangram,tangrams/tangram,xvilan/tangram,zerebubuth/tangram,DHaylock/tangram,TitoAgudelo/tangram,rosamcgee/tangram,taylorhxu/tangram,xvilan/tangram,DHaylock/tangram,DHaylock/tangram,rosamcgee/tangram