Recently bought 2 precisions, a '79 and a '67 and I have a couple questions for the 'experts' out there... The '79 of course doesn't have a thumb rest, but I would like one on top for when I play it. What colour thumb rest would be appropriate for a sienna burst/maple bass with the W/B/W pickguard? It's a perfect mint bass otherwise, so if I were to have a thumb rest installed on it would I seriously compromise the potential value of it in years to come? The '67 has the original guard, not cracked, but slightly warped to the point where the shielding is exposed around the edges. I'm hesitant to trim the shielding given the instrument is all original, so does anyone have a recommendation as to where to get a proper replacement pickguard (and leave the original as it is...in a safe deposit box with an all-hours armed guard watching over)? Thanks in advance for response!