It's amazing what one can do with lots of time and elbow grease.
i have a pair of Shimano EXAGE clipless pedals. i hate the grey anodizing and far prefer polished aluminium for looks. therefore I decided to remove the grey anodizing and then try and polish these pedals. Unfortunately I didn't take any BEFORE images of my pedals. I did find images of the very similar Shimano EXUS clipless pedals. The only difference between these and my EXAGE pedals is the part right next to the pedals body.
Here is what the EXAGE clipless pedals looked like prior to the modifications and polishing.
Shimano Exus Clipless Pedals by Miele Man, on Flickr
The red arrows sho some of the casting seams that I filed off. I also filed off the ridge on the outside of the pedals and smoothed the transition from the bottom to the top of the sides of the pedals.
I scraped as much of the grey anodizing off as I could and then used a file and various grits of emery cloth to reshape the sections I wanted reshaped. Once that was done to my satisfaction I used various grits of wet/dry paper wet to remove the scratches and to polish the aluminium alloy pedal body. This project was done entirely by hand. I started with 180 grit wet/dry paper and ended up with 12000 polishing film.
This is the result.
Shimano Exage Clipless Pedal Refined & Polished 1c by Miele Man, on Flickr
Shimano Exage Clipless Pedal Refined & Polished 1d by Miele Man, on Flickr
Shimano Exage Clipless Pedal Refined & Polished 1e by Miele Man, on Flickr
Shimano Exage Clipless Pedal Refined & Polished 1f by Miele Man, on Flickr
Shimano Exage Clipless Pedal Refined & Polished 1g by Miele Man, on Flickr
The EXAGE 500 Crank also took this chrome-like shine when cleaned of the grey anodizing and then polished.