69.0.3497.14 (Official Build) dev (64-bit)
Firmware Version	Google_Lulu.6301.136.57

Highlight object with keyboard focus uses an orange highlight ring exactly like the ChromeVox highlight ring. I recommend another color not already in use:

ChromeVox: orange
Select To Speak: pink
Switch Access: green
Highlight mouse cursor: red
Highlight text caret: blue