Based on our users' feedback, Zoho Chat's update today introduces a new theme. In addition to the existing tab-based theme, you can now have floating (drag-and-drop) chat windows on a desktop theme. These chat windows are now within the Zoho Chat browser tab but soon we will be giving the pop-out option as well. The new theme's available in two gradient color styles, blue & black, with more colored skins to come.
Desktop theme - Black
Desktop theme - Blue