after 50 years of enjoying cigars, I find that weak, pale wrappers are to be avoided.
Mottled wrappers can be excellent, very dark wrappers can be hard to burn, or can be dyed .
Shiny or "oily " wrappers will usually have more and stronger aromas, and add a lot to the enjoyment.
Light khaki colored wrappers can be excellent or awful, depending on the care given during curing.
Size does not influence me as far as a desired wrapper color, a non issue.