You can play with changing the foreground and background colors of the window by clicking the right mouse button over a color to change the background to that color. Click the left mouse button over a color to change the foreground color to that color. Menu customizing is also done in the .tvtwmrc file. You can change the menus, and define the mouse buttons to your wishes. The Key field shows what key to press when you hit the appropriate mouse button.
Context is where the pointer has to be for the function to take place.
If I hold down the control key with the Middle Mouse button any where it will bring up a kill icon, which I can then kill any windows with it. By using the cursor keys on the number pad, and the control key, one can scroll through the Virtual Desktop. Here is a sample menu. The characteristics of an application are referred to as the resources of the application. Common resources include the foreground and background colors and font used by an application.