(J − H)/(H − Ks) colour–colour diagrams of stars from Fields 7 and 8. Stars outside the obscured region are plotted in the left panel, and those in the direction of shells and globulettes in the right panel. The stars detected inside globulettes are plotted as diamonds. Also plotted are the loci of unreddened giant (red, thick) and main-sequence (black, thin) stars. The direction of interstellar extinction follows the slashed lines and the vector shows a corresponding visual extinction of 5 mag.