The same toolbar will appear on the Explorer window if you select Visolve item from the Explorer's menu. Using the toolbar on the taskbar, you can transform color of the entire screen by clicking on one of the toolbar buttons. And using the toolbar on the Explorer window, you can transform color of the entire window. Starting from the left, the eight buttons of the toolbar are corresponding to Red-Green transform, Blue-Yellow transform, Saturation increase, Red filter, Green filter, Yellow filter, Blue filter, and Hatching. (In the initial settings, the Hatching button does not appear on the toolbar.)
While the transformed image is displayed, the cursor is the following shape:
When you click anywhere on the desktop, the screen or the window will be returned to the original color, and the cursor will be also returned to the original shape.