VueMinder Pro and Ultimate can be skinned with custom appearance themes. The documentation linked below gives a brief introduction to using the theme editor:
http://www.vueminder.com/products/vuemi ... theme.html
How to Share a Theme
If you've created a custom theme and would like to share it with other VueMinder users, please post it here! The theme can be uploaded as a zip file. Optional - if you've edited the icons too, include the file named "ToolbarsUser.xml" in the zip file. That file is located in the folder where VueMinder stores its data.
How to Install a Theme
To install a theme that has been uploaded here, download and extract the file. Copy the file that ends with an "isl" extension to the folder where VueMinder was installed. This is usually "C:\Program Files (x86)\VueSoft\VueMinder". The theme can then be selected in the Appearance Options.
If the zip file includes a file named ToolbarsUser.xml, exit VueMinder by right-clicking its icon in the task tray and selecting "Exit". Extract the ToolbarsUser.xml file to the folder where VueMinder saves user data. The path can be found in the Program Options. When VueMinder is restarted, you'll see icons that are more consistent with the appearance theme.