|MadSci Network: Chemistry|
In a simple word, "no." Electrochromic systems are generally, 1) Thermochromic cholesteric liquid crystals on a conductive backing. Example is the battery test strip. 2) Nematic liquid crystal between transparent conductors viewed through a linear polarizer - LCD displays and videocamera displays. 3) True electrochromic displays, such as thin film WO3 and electrolyte between transparent conductors. Reversible reduction leads to strongly colored tungsten bronzes. 4) Electroluminescent displays wherein high frequency AC alternately creates polycyclic aromatic hydrocarbon radical anions and radical cations which recombine to regenerate hydrocarbon starting materials and emit light as the electron falls into the hole. In no sense of the question does there exist an electrochromic paint (slap it on, dry, go for it) which colors by mere passage of current.
Try the links in the MadSci Library for more information on Chemistry.