DD brings home work from preschool every day. It wasnt until she accidentally brought home another girls work yesterday that I noticed this.
DDs paintings/drawings are always the same colour. One day it will be all red. The next all blue etc.
Her sticking pictures are always the same. Eg, they get lots of colours/shapes of things to stick on paper. Hers are only one thing. Yesterday she made two paper plates with a purple circle stuck in the middle. Both the same 
The other girls work is all different colours. Different shapes etc.
Am I seeing an issue where there is none? Is she just lacking in imagination?