The dyes used for color enhancement of wrappers are made from the stalks of the tobacco plant, so it's really just a tobacco juiced wrapper, BFD. So long as it doesn't come off on your fingers or hands who cares.
Just because some manufacturers use color enhancement of the wrappers for looks, doesn't mean that they are doing anything unnatural or cutting corners (such as in accelerated fermentation or maduro-matic ovens).
It's the mentality of wanting everything to look identical the belief that this somehow makes it a better cigar, that has created such a market for the color enhancement.
Some major manufacturers use bethunes of various natural ingredients for flavor/aroma enhancement (rum is a popular ingredient - past that, everything else in there is a closely guarded secret of each manufacturer) to touch up cigars, you know those nice shiny wrappers? Yeah... Now that you know this occurs, is it a big deal, like color enhancing? No different really.
You want cigars that have wrappers that aren't treated in any way? Smoke Cuban cigars. Their wrappers look like **** most of the time. Splotchy, veiny, spots, no two are the same color.
Much ado about nothing really.