though the ideas for the coding have not all been introducedit is still informative to run the example program colors py as you click the mouse over and overyou see the names and appearances of wide variety of built-in color names the names must be place in quotesbut capitalization is ignored custom colors custom colors can also be created to do that requires some understanding of human eyes and color (and the python toolsthe only colors detected directly by the human eyes are redgreenand blue each amount is registered by different kind of cone cell in the retina as far as the eye is concernedall the other colors we see are just combinations of these three colors this fact is used in color video screensthey only directly display these three colors common scale to use in labeling the intensity of each of the basic colors (redgreenblueis from to with meaning none of the colorand being the most intense hence color can be described by sequence of redgreenand blue intensities (often abbreviated rgbthe graphics package has functioncolor_rgbto create colors this way for instance color with about half the maximum red intensityno greenand maximum blue intensity would be acolor color_rgb( such creation can be used any place color is used in the graphics( circle setfill(acolor)random colors another interesting use of the color_rgb function is to create random colors randomcircles py the code also is hererun example program """draw random circles ""from graphics import import randomtime def main()win graphwin("random circles" for in range( ) random randrange( random randrange( random randrange( color color_rgb(rgbradius random randrange( random randrange( random randrange( circle circle(point( , )radiuscircle setfill(colorcircle draw(wintime sleep win promptclose(win getwidth()/ main(read the fragments of this program and their explanationsto do random thingsthe program needs function from the random module this example shows that imported modules may be put in comma separated list objects and methods