Since 2.02v we have themes for widgets.
If you want to see how themes can look like check our free themes category.
Navigation to "System configuration" -> "Live help configuration" -> "Import new theme" in this window just uploade new theme.
Theme argument is /(theme)/<theme_id> so you can just manually write what theme should use. E.g index.php/chat/startchat/(theme)/2
Just send it to me. firstname.lastname@example.org
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