Something to keep in mind while nit-picking the colours in the tartans is that the Technicolour process allowed the director to alter the hue of the film to suit the mood of a particular scene. For example, to heighten the emotion of anger in a specific scene the film could be processed for a greater red saturation. Likewise, if the scene called for a feeling of isolation more blue could be added to the colour of the scene. This tinkering with colour for dramatic effect will effect things like the colour or intensity of the red and white stripes on the kilts worn by the men serving in the regiment with no name. Likewise a TV screen isn't exactly colour corrected and what you see on television is a far cry from what you would see on screen in your local cinema.