Demonstration of the use of optical+NIR colours for the identification of likely stellar objects amongst the red sequence galaxy candidates. In each panel, the points colour-coded with redshift show the red sequence candidates in the (r − K_s)×(r − Z) space, while the blue contours show the 68% and 95% confidence regions of the distribution of stars with a high level of confidence. Left panel: at high redshifts (z_red > 0.6), the considerable overlap between the distribution of red sequence candidates in the dense sample (L > 0.5 L_pivot(z)) and that of the high confidence stars becomes clear. Right panel: in the case of the red sequence candidates in the luminous sample (L > L_pivot(z)), the overlap between the two distributions is less apparent.