Since you aren't planning on selling it, resale value is irrelevant. I think it looks fine as-is. I've seen some really botched up front sights. Yours is tasteful and is an actual improvement in shootability. If you ever do have to sell it, just find a University of TN fan that loves orange. :-)
Another option would be to knock the orange plastic out and replace it with a piece of real ivory. I could send you a little scrap from some of the knife scales I've made. Another option would be to have a jeweler put silver or gold there. None of these options would be original but they wouldn't be 'toothbrush'.

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Chris
SWCA #2243 SWHF #292