Click in the large color box to choose a particular shade or choose from a selection of recently used colors.
You can also use any color as a reference using the Pipette function. To use, click and hold the mouse down on the Pipette button. Continue holding the left mouse button down and drag the mouse cursor to a spot anywhere on the screen with the desired color. Release the left mouse button and NoLimits will automatically determine the color at that spot and set the current color to it.
Press OK to save the color selection or Cancel to close the panel without making a change.