better random grayscale on buildings, and typo
better random grayscale on buildings, and typo

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