Colour-colour plot of the detected knots created using I_E−Y_E, Y_E−H_E colour combination for UGC 2665 and MCG +07-07-070. We show the colour of the low surface brightness features detected from the segmentation map over the stripped tails of the galaxies. The colour values for different single stellar population ages generated using BC03 stellar population models, Padova 94 isochrones, and Kroupa IMF for solar metallicity are shown in filled circles connected with dotted line. The corresponding age is shown in the colour-bar scale. The I_E−Y_E and Y_E−H_E colour distribution of the knots are shown in side panels.