Absolutely.Apparently value is in the eye of the beholder.
The way I see it once a pair is no longer new/mint/BNIB/LNIB/etc... the value of the pair has already decreased significantly - and that pair is fair game to mod... Add wear and tear on the lenses, rubbers, frames, and time itself to the segment of the market dedicated to repairing and customizing these pairs and that often restores their value to some extent. In dollars and sense it is not likely that you'll get $400, or even $350 for that pair you put $500 into, most of the time, but what was it worth to you while you had it? Maybe you landed a junk pair, cleaned them up and/or refinished them, and sold them for a profit after using them as a cool and unique pair to wear for a while?
So yeah - value is in the eye of the beholder and as subjective as we want it to be.
I, like many others first got into X-Metals because they were different in many ways - many good ways - customizing is one way to maintain that - with or without consideration of monetary value. New combinations and coloways are not only an expression of how a valuable a pair is to the individual/owner, but evidence that the spirit of X-metals is alive and well!