iBook G4 keyboard key rubout

[Nukemkb]

I have several keys on my keyboard that are blank - apparently rubbed out! Does anyone know of anyway of recovering the proper lettering? I don't wanta take an inkpen to them - and surely some entrepreneur has discovered a method of letter recovery without buying another keyboard? TIA

 

[TraceyS/FL]

I can say that after 2 weeks - the Sharpie I used is blurry....

It doesn't bother me - but my DD doesnt' know how to type (nor DH very well!) and they need it written on there.