As you may know, we have 3 tools on EasyPronunciation.com that insert stress marks into text:
Just yesterday we added the support for the premium features (text-to-speech and translation into your native language) to these tools.
In addition, the tool that inserts stress marks into Russian text now have a new setting. You can choose the styling of the stressed vowels: stress mark, color highlight, stress mark with color highlight.
The default color of stressed vowels is red, however you can change it to whatever you want by going to “My account” -> “Customize my experience” -> “Set the color for stressed vowels”.