How to revive an old iBook SE

My wife is still using her old iBook SE. But several weeks ago I noticed that the SE display was getting "yellowish"... in addition the soft plastic rubber surrounding the computer was not really glued to the case anymore.
So I decided to revive the iBook SE.
Following the instruction given in the following web page :
http://homepage.mac.com/friesen/CCFL.html I exchanged the iBook's backlight. Hereafter is a photo taken in April 2004 featuring the iBook SE with yellowish display side by side with my PowerBook 15" 1.5Ghz :

Once the iBook's backlight replaced by a new one the same picture was taken, this time it was a PB 15" 1.67Ghz.

The soft plastic rubber was glued again, with care, making the operation almost invisible: