Hi!​ ,
In the software, we do not provide the rules for placing accents, and there's a reason for that. These rules are based on knowing how the word sounds, so providing them would likely be frustrating. The way the rules work is that you sound out the word, then, depending on where you place the emphasis and which letter the word ends with, you determine where the accent should go.

Here is a link that can guide you through the rules: https://www.thoughtco.com/stress-and-accent-marks-3079562

Best regards,

Thanks for your feedback. I'll send your comment to the development team to check if it is possible to change the colors for better visualization.

Regards,