Problem: On product catalog page, When customer chooses a color, products are not being shown with its related color images which don't create good experience for customer. So here we are trying to solve this issue.
Please ensure that,(Admin -> Catalog -> Products -> 'Search Product' -> Edit ->Specification attributes -> Add attribute -> 'add values for Color attribute') (For Example : If there is Red colored Product,Add Red Value to Specification attribute)
(Admin -> Catalog -> Products -> 'Search Product' -> Edit -> Product attributes -> *If Color attribute not added => Add a new attribute -> Choose Attribute 'Color' -> Save ->then follow the step below *If there is Color Attribute => Edit -> Add Values -> Save
Note : Don't forget to select Picture for particular color and also the Attribute Value name should be same to Specification attribute name)