Hollywood accepts colors in the 24-bit RGB format. This means that you have 8-bit per color. RGB24 is the common format for specifying colors today, e.g. it is also used in HTML.
You will usually specify RGB colors in hexadecimal notation starting with a '$' prefix. The general syntax for a RGB color in hexadecimal notation is
$RRGGBB RR: color intensity of red (maximum = 255 = $FF = 100% red) GG: color intensity of green (maximum = 255 = $FF = 100% green) BB: color intensity of blue (maximum = 255 = $FF = 100% blue)
Colors are generated by mixing the red, green and blue components together. Every color component can have a maximum of 255.
Here are some example colors:
#BLACK = $000000 - black is just 0% of every component #WHITE = $FFFFFF - white is 100% of every component #RED = $FF0000 - pure red is 100% of red #GREEN = $00FF00 - 100% of green #BLUE = $0000FF - 100% of blue #YELLOW = $FFFF00 - yellow can be mixed with 100% of red and green #FUCHSIA = $FF00FF - fuchsia is 100% of red and blue #GRAY = $939393 - gray is a bit of everything
When Hollywood asks you for a RGB color, you can specify your individual color using hexadecimal notation or also one of the special inbuilt color constants.