Improve Mod Rewrite rules text colors

Right now I press "update Mod Rewrite rules" and get the message:
"The plugin could not update /home/rstatis/public_html/.htaccess file: Page test failed as pages did not match with new .htaccess rules."
I think this text should be colored in red or something similar. The .htaccess text is colored in green and it creates the illusion that the process was performed correctly.

Reproduce the “update Mod Rewrite rules” action and inspect where its result message and the .htaccess text are rendered. Confirm the failed page-test message is visually distinct from successful output, then verify the updated styling in the same admin workflow.

Written by the indexing model from the issue text.