Radial Menu
Note
This feature is only available in the full version of Compositor Pro.
Compositor Pro has a radial menu that can be accessed with V
by default (this can be changed in your Preferences) and includes several useful tools. On the right side of the menu, you can use the Add Mix Node and Color Grading menus without having to move to the side panel.
On the left side of the menu, you can see a shrunken version of the Node Selector that is limited to the Favorites and Custom Nodes menus.