Color is related to Painter. 
you are likely to find Vendor in/at/on Conference. you are likely to find Confusion in/at/on Conference. Confusion is a different concept from Peace. Peace is related to Charity. 
Color <--RelatedTo--> Painter 
Vendor --AtLocation--> Conference <--AtLocation-- Confusion <--DistinctFrom--> Peace <--RelatedTo--> Charity 