Help Please!

im trying to animate a mc to go from this


 tn2.colorRedAmount = 1; 
   tn2.colorGreenAmount = 1;
   tn2.colorBlueAmount = 1;

to this


 tn2.colorRedAmount = 255; 
    tn2.colorGreenAmount = 255;
    tn2.colorBlueAmount = 255;

with a smooth transition…can this be done with only AS…