Chris - I have used something similar to Alan but with clear labels.
Although not a close-up, you can see the results on my 2200m TX and
Wattmeter in the first picture here:
Further to what Alan suggests, you can also purchase 'decal' paper that can
be used with your laser printer (maybe bubble-jet as well?) to print out
labels that can then be cut, soaked and positioned on your panel
appropriately. I haven't bought any of the decal paper locally, but have
seen it on e-bay.
73 / Steve / VE7SL
Web: "THE VE7SL RADIO NOTEBOOK" at http://www.imagenisp.ca/jsm