:Obviously, the IMDb is not a complete listing, and unless such facts were listed in the National Exhibitor's yearly listing or were added by a private user, they will not appear there.  RED LIGHT should be RED LIGHTS (1923).  I will correct this.  SEVEN KEYS TO BALDPATE should be the 1925 version.  The source for both can be found in trade reviews of the time (to which I have yet unearthed what exactly wast colored).  When I look into them a little more, I will be sure to post on the page my findings.