"Scribble" plecs are not a single particular plec but rather somewhat similar appearing "scribbled" Hypancistrus. There can be various different plecs grouped in the general descriptive name & some sell for more than others. The black & white ones are usually more desireable like L333 or L066. Many of the species that are more brownish in coloration such as L129 & L199 are more deemed less valuable & sell for lower prices.don't know much about your plecs either, but just curious , you said you were concerned because of the color... what color do you mean. I have seen scribble in store tank with brown stripes , rather than the usual black .
Georgie