Java Tutorial - Java Script :
To change the page’s color, type a new value into the “Background color of page” text field and click the Submit button. Colors are expressed as a # sign followed by three 2-digit hexadecimal numbers (in Figure 21.2, the numbers are FF, CC, and 99). These numbers represent the amount of red, green, and blue the color contains, ranging from a minimum of 00 to a maximum of FF. If you aren’t familiar with hexadecimal colors, you can try these out while testing the servlet:
#FF0000—Bright red
#00FF00—Bright green
#0000FF—Bright blue
#FFAAAA—Light red
#AAFFAA—Light green
#AAAAFF—Light blue
#FFCC99—Butterscotch
