Is the sensor integrated or can it be removed for replacement? I would try to take it out and see. I would imagine that you can paint over them, they're body color in other vehicles from the factory.
2003 Chevy 2500HD D/A ECSB 221K (Sold)
EFI Live DSP5 (thank you to Dustin and Idaho Rob @ATP Trucks), batmowheel & BD wastegate (thanks to MrManners @ Synthetic Motorsports), Kryptonite tie-rods, MBRP downpipe and 4" straight pipe, 33" BF Goodrich A/T KOs on H2s
2007 LMM/Alli CCSB 4x4 (Sold)
EFI Live and downpipe/5"
2007 Grand Prix GTP (needs headers and s#!*)