Make the "Expression Node" and "Convert Unit" visually distinct

[altenbach]

As outlined in this post, the current identical look of the Expression Node and Convert Unit can cause serious miscommunications, since their functions are completely different.

I suggest that they are made to look different so we can tell immediately what we have.

For example the two results below are very different, even though the code looks absolutely identical if the labels are hidden.

One possibility would be to make "convert unit" a different default background color (example shown below), but there are probably even better suggestions. How about rounded corners (not shown)?

[Darren]

National Instruments will not be implementing this idea. We are not planning any further cosmetic changes to the Expression Node or the Convert Unit node.