As has been said---- maybe, but maybe not. It really depends on what you have and what condition it is in to start with.
If the razor is for your own use I really wouldn't bother unless the existing ones are useless. Personally I like razors that are either original or true to original type, ie changing a pair of bake lite scales for X X X X X X that was offered with the razor originally would be OK but stripping out a perfectly good pair of horn/bakelite/X X X for Spangly acrylic or whatever would just ruin an otherwise perfectly good razor. However some buyers like the bling. If you are looking to tart up a razor to resell then I think your gains will be minimal.