I just wanted to chime in and say...GREAT JOB!! That keyboard is freakin' awesome looking.
What type of label did you use?? My blue Cherry tenkeyless Filco came with green LEDs...which I don't like nearly as much as the blues (which my cherry brown tenkeyless had) So may be modding mine as well.
**EDIT**
So, what size do you resize that .xcf file to (it's native size is HUGE). 
Thanks for the kind words. As far as which label I used, it was just a standard Avery clear label for laser printers. I used a clear one so the light would shine through the "windows" I drew in it.
To make the lettering show up white, I some small peices of this white vinyl sheet stuff they use in RC hobbies called Monocoat on the sticky side of the label where the lettering shows through. I guess a few small, strategically placed bits of paper would do the same thing.
Of course you could probably just use some white labels and cut out the windows where the LEDs are with an exacto knife or something.
To resize the label (I drew it actual size in Gimp), if you are using Gimp, when you go to print it, click the Image Settings tab in the Print dialog box, and there you can dial in the exact size (in millimeters) that you want to print the label out.
This is my primary keyboard now. It looks so cool on my desk I don't want to use anything else. The only thing I noticed is an all black keyboard with the light texture finish on the plastic that this one has really shows the dust. A small price to pay though...
