The tune of the song given in the link by Mick does not appear to be related to the title tune of the C.D. although both are from Shetland.
"Saw Ye My Maggie" was accounted an old song at the time of Burns, who, if I remember correctly, comments on it. Until fairly recently a fuller version of the song was to be found on U-Tube, this was not appreciated for the quality of the singing but rather for the rarity of the song.
To my mind, as one brought up among hodden greys and such like muted colours, someone appearing all dressed in yellow would raise an eyebrow, although in more modern times no one would give it a second thought.