(PECL imagick 2.0.0)
Imagick::cycleColormapImage — Displaces an image's colormap
本函数还未编写文档，仅有参数列表。
Displaces an image's colormap by a given number of positions. If you cycle the colormap a number of times you can produce a psychedelic effect.
The amount to displace the colormap.
Returns TRUE on success.
Throws ImagickException on error.