Are you already using the Process Capability analysis within the Distribution platform? There, you can create a new column for each process, which returns either 0 if the value is out of spec, or 1 if it is in spec. Then, use this column in the Color Overlay role in your graph builder histogram.

By the way, if your goal is the quickly summarize the process capability for many of your processes in one overview, have you tried the Process Capability and Process Screening platforms?