An electrochromic device comprising: (a) a first substantially transparent
substrate having an electrically conductive material associated
therewith; (b) a second substrate having an electrically conductive
material associated therewith; (c) an electrochromic medium contained
within a chamber positioned between the first and second substrates which
comprises: (1) a solvent; (2) a cathodic electroactive material; (3) an
anodic electroactive material, wherein at least one of the anodic and
cathodic electroactive materials is electrochromic; and (4) a
color-stabilizing additive, wherein the color-stabilizing additive is
electroactive within a normal operating voltage of the electrochromic
device; and (d) means associated with the color-stabilizing additive for
maintaining an at least nearly colorless electrochromic device while the
electrochromic device is in an open circuit and/or zero potential state
relative to the same device without the color-stabilizing additive.