Give the user ability to color or highlight applied steps in a Gen2 Dataflow

[Steve-DataCoura]

When building a data transformation with a Gen2 dataflow it's often helpful to add applied steps for testing and verification. I'll often apply filters on a field to ensure that related values are correct - or group data, etc.

There isn't a way to highlight these applied steps - so the steps for testing can remain after I'm done with the testing (user error).

It would be helpful to allow me as a user to highlight specific applied steps (using font color, boldface or something else).  This will make it easier to identify the steps later for removal.  

Could also be used to highlight steps for other reasons of course (e.g.  steps where I'm unsure of the M-code, or where additional information is required before completing the M-code).