(PECL imagick 2.0.0)
ImagickPixel::setColorValue — Sets the normalized value of one of the channels
This function is currently not documented; only its argument list is available.
Sets the value of the specified channel of this object to the provided value, which should be between 0 and 1. This function can be used to provide an opacity channel to an ImagickPixel object.
One of the Imagick channel color constants.
The value to set this channel to, ranging from 0 to 1.
Returns TRUE on success.