Thanks for the pictures, Jon. As I said in an earlier post, the blue paint of the case badge took a hit during the treatment and I re-touched the colours up as best I could. Some Isopropyl Alcohol might remove the remnants of the mess.
@ hikey
The results do look somewhat patchy as I previously mentioned (Jon's camera must be better than mine) and although I could have maybe took it a little further, I was worried that the plastic would 'bloom' badly, as experience has shown that badly discoloured parts such as these have more of a propensity to 'blooming'.
The keyboard was much more successful and looked absolutely immaculate (and was totally cleaned up inside, too) when I returned it to Jon. His prized Microprose sticker under the keyboard wasn't affected at all.