It sounds good but do I really want to discount size "Large" across my entire inventory. That could apply to Shirts, Pants, and anything else that uses the same specification. 

 25% discount on all black products

This may work for a specific store; but how likely is this use case going to apply? Certain products don't even have a margin of 25%; for example, you should discount an iPhone 11 Black at 25% when compared to iPhone 11 Charging Cable Black. 

I'll be happy to add this to the roadmap if we have more use cases. I'm going to keep this open for Community Feedback.