Use formatting to demarcate output

[EeethB]

Particularly for the c-based testing in verbose mode, the output is rather busy and can be hard to parse (Perhaps easier for SMEs). But the crayon package is very lightweight & could be used for e.g. alternate formatting of rows in the test details data frames. This would make it easier to separate each intersection's rows

[EeethB]

This issue discussion has an example function that could be helpful

https://github.com/r-lib/crayon/issues/94

[EeethB]

Also this package (which takes an additional purrr dependency)

https://github.com/january3/colorDF/tree/master/R