@snicker: There is an avisynth plugin called HistogramAdjust, which can adjust a video using another video as reference, but I've tried it on some various clips and the result never comes out perfect, and it only seems to adjust the RGB gamma curve together, not separately.

So far, Colourlike is the best plugin I know for this, but I wish it would have a mode for video and not only stills. Right now to get the most out of Colourlike, one has to split a video shot by shot and then let it analyze each shot from each version and re-color them separately. There's gotta be somebody with enough coding talent to write an updated plugin based on this.