I think this one is done.
I made some tweaks to the drop shadows on the top third of the body, added some subtle shading to the bottom edge of the vents, changed the solid color of the bottom third to a gradient, (To give it some depth.) and increased the shading on the buttons.
I also tweaked some highlights, added a very small Gaussian blur to some parts, (An essential trick to make things look realistic.) and changed the color of the buttons based on this image.
You’ll notice that the Atari logo is smaller, and the XE System logo larger, than the real console.
If you look at most of my computer system graphics you will see that there are many pieces missing in the background. While my mission requires there to be some wiggle room for resizing the bezel, I am gambling that most will not make it really small. (Why would they?)
A question that is always hard to answer is…
Exactly how beige was this unit in real life? Half the images I find show it to be almost grey and the other half VERY beige. (Is it beige or is the plastic yellowed from age?)
@akuma22 How beige is the XE? (Since you owned one.)