<affine_animation loop="1" pivot_x="40" pivot_y="40" >
    <key t="0" scale_x="1.0" scale_y="1.0"       color="ffffff00" />
    <key t="1.5" scale_x="1.0" scale_y="1.0"  color="ffffffff"/>
    <key t="3.0" scale_x="1.0" scale_y="1.0"  color="ffffff00"/>
</affine_animation>
