You can distinguish two active speakers by
- inset your text here
- Angry man: insert your text here
But sometimes would be nice to distinguish them by colour. Many subtitle editors have this feature.
Thanks for asking this, David.
Presently, the Amara editor does not offer the possibility to use color. However, you could download your subtitles as a DFXP (same as TTML) file, which supports color attributes. See https://www.w3.org/TR/ttml1/#style-attribute-color if you wish to add the color attributes in the file.
Personally, I am a bit wary of inserting things in DFXP files, so if I needed to use color coding, I'd first create the basic subtitles with Amara, download the file and then use it with a desktop subtitling tool that offers a WYSIWYG option to add color.