The color selector will be popped up by Hollywood Designer everytime you need to choose a color.
The dialog allows you to mix your own colors from the three basic colors red, green and blue. The color manager has a color wheel, which shows all available colors with 100% brightness. Next to the color wheel there is a slider which you can use to configure the brightness. In the lower half of the manager you will find three color sliders, which you can use to set the red, green and blue parts of the color.
Some colors are not available in the color wheel. You need to create this colors by using the brightness slider. For example, if you want to have the color black, you need to move the brightness slider all the way to the bottom because black is just any color with no brightness. If you want a gray color, move the color wheel knob to the center of the wheel (white) and use the brightness slider to create your desired gray color.
If you want to change the color of an object, select the object in the layout dialog or in the object manager. Now you have to click on the color field in the bottom-left area of the layout dialog. Hollywood Designer will then pop up the color selector. Here you can select the new color and apply it to the object. Of course, this does not work for brushes, videos or animations because they use their own colors.
Additionally there is another button in the color manager: If you click on "Load", you can choose a color from a pre-defined palette. This palette covers many of the popular colors.
Finally, you can configure several user colors in the preferences. These user colors can then be easily accessed from the color selector.
In the preferences you can choose whether or not the color selector dialog should remain always open.