This plugin lets you easily see errors and warnings in the Maya console.

it's quite primitive, e.g. the line // https://www.autodesk.com/maya-arnold-not-available-error will be colored as an error

install

1. copy the script in your plugins folder %UserProfile%\Documents\Maya\plug-ins
2. enable the highlight plugin
3. open script editor.
4. it wont work untill you go out of focus, so click on the viewport then back on the editor.

reference

see https://hannesdelbeke.github.io/wiki/tech%20art/maya/Maya%20script%20editor%20syntax%20highlight/