What color is shared by the matte objects that have the same shape and are positioned close to one another? 
return objects ;return #1 that  are matte ;return shape of #2 ;return #2 where #3 is  the  same ;return #4 that  are positioned close to  one another ;return colors shared by #5
['select', 'filter', 'project', 'comparative', 'filter', 'project']