as3的实现调色的类。可实as控制图像的饱和度，亮度，对比度，及色相值。 -as3 implementation of color classes. Can really control the image as the saturation, brightness, contrast, and hue values.

Actionscr ipt3.0写的控制图像亮度、对比度和饱和度的工程-Actionscr ipt3.0 write control image brightness, contrast and saturation engineering..