To make the chat window WCAG 2.0 accessible friendly.
To make the chat window accessible to screen reader and keyboard users. Within the chat window identify/outline where a user is focused on when tabbing through the window. Making sure the colors contrast well for users you are partially blind or color blind. and making sure that a screen can easily and clearly explain what is on the screen.
Gregg Turnbull commented
+1 from me on this. Cheers