c

import flash.display.BitmapData
var text_mc:MovieClip=createEmptyMovieClip("text_mc",1)
var textBox:TextField=text_mc.createTextField("textBox",1,0,0,200,20)
textBox.text="222222"
var bmp:BitmapData=new BitmapData(text_mc._width,text_mc._height)
var bmp_mc:MovieClip=createEmptyMovieClip("bmp_mc",2)
bmp.draw(text_mc)
bmp_mc.attachBitmap(bmp,1)
text_mc._visible=false
bmp_mc._alpha=50

/
import flash.filters.ColorMatrixFilter
var text_mc:MovieClip=createEmptyMovieClip("text_mc",1)
var textBox:TextField=text_mc.createTextField("textBox",1,0,0,200,20)
textBox.text="222222"
var fil:ColorMatrixFilter=new ColorMatrixFilter([1,0,0,0,0,
                                                                                     0,1,0,0,0,
                                                                                     0,0,1,0,0,
                                                                                     0,0,0,0.5,0])
var fil_arr:Array=new Array();
fil_arr.push(fil)
text_mc.filters=fil_arr;