Is the only item of one color shiny or matte?
return items ;return colors of #1 ;return number of #1 for each #2 ;return #2 where  #3 is  one ;return #1 where  #2 is  #4 ;return if  #5 is  shiny ;return if  #5 is  matte ;return #6 or #7
['select', 'project', 'group', 'comparative', 'comparative', 'boolean', 'boolean', 'union']