Is there a way to differentiate the Approval Chain?

Summary

Our users are having a difficult time figuring out who is the current approver for a Purchase Requisition, Change Order, Invoice

Content

Our users are having a difficult time figuring out who is the current approver for a Purchase Requisition, Change Order, Invoice, is there a way to easily differentiate between someone that has already approved vs who the current approver is? Yes, I know that there is a checkmark next to the name of the person that has already approved, but to someone who does not understand the approval chain, all they see is a rectangle with a name and all in the same color scheme.