Why importing heavy bitmaps in Flash when, with a bit of patience, you should be able to create fancy 3D chrome effect using vector graphics. First let's have a look at the final result below (fig1)
fig1
267 bytes, hey not too bad :) ok let's start from the beginning.
1. create a new FLA with a size of 200x200 and set the background color to #666666 (using a dark grey is best for the final visual effect, although it's just a matter of personal taste)
2. name your first layer "sphere" (fig2) and and on the first frame draw a 150x150 black circle (fig3) without stroke (fig4)
fig2fig3fig4
3. In the color mixer panel select the Radial fill style and create the gradient as shown on fig6
fig6
the RGB color values and the alpha from left to right are :
R:255 G:255 B:255 A:100%
R:191 G:191 B:191 A:100% R:149 G:149 B:149A:100% R:254 G:197 B:112 A:100% (that color gives an orange reflection to the sphere you can experiment with different color )
R:0 G:0 B:0
If you want to add a color to the gradient just click anywhere below the gradient bar untill you see a little + sign near the cursor (fig7)
fig7
To remove a color just click on a colored square and drag it down (fig8)
Chrome effect in Flash with vector graphics 
