Most of the companies are designing their CAD models with realistic colors today.
Unfortunately, it is not always possible to differentiate the parts from each other in assemblies.
Creating special view representations is not an option since this have to be re-done for each assembly and for each "real" view representation.
So please create a new visual style, where each part (or each assembly occurrence) gets an unique color.
Example with realistic colors
Example with falsified colors
New visual style