En el panel de propiedades te puede servir Color->Tint y ahí seleccionas el color.
Con AS este es un ejemplo que viene en Flash 8:
Código :
import flash.filters.BitmapFilter;
import flash.filters.ColorMatrixFilter;
var image:MovieClip = this.attachMovie("YourImageLinkage", "YourImage", this.getNextHighestDepth());
image.cacheAsBitmap = true;
var listener:Object = new Object();
listener.image = image;
listener.onMouseMove = function() {
var xPercent:Number = 1 - (_xmouse/Stage.width);
var yPercent:Number = 1 - (_ymouse/Stage.height);
var matrix:Array = new Array();
matrix = matrix.concat([yPercent, 0, 0, 0, 0]); // red
matrix = matrix.concat([0, xPercent, 0, 0, 0]); // green
matrix = matrix.concat([0, 0, xPercent, 0, 0]); // blue
matrix = matrix.concat([0, 0, 0, 1, 0]); // alpha
var filter:BitmapFilter = new ColorMatrixFilter(matrix);
image.filters = new Array(filter);
}
Mouse.addListener(listener);
listener.onMouseMove();