<IRIDAScript>

//"parameters"
range_min	= 64 / 1023;
range_max	= 940 / 1023;

//scale 0...1 down to the specified range
out 		= in * (range_max - range_min) + range_min;

red = out;
green = out;
blue = out;
alpha = in;	//we don't change alpha

</IRIDAScript>