A method for determining color properties of a target, comprising: providing an enclosure (10) having first and second opposing end walls (10a, 10b) each having an aperture therein, the first end wall (10a) having, on its surface within said enclosure, a pattern (20) of colored sections arranged around the respective aperture (16), no light source being provided within said enclosure; placing said first screen (12) over said target; substantially simultaneously illuminating, through the aperture in the second end wall, said screen overlayed on said target and using said lens module to obtain sensor data representative of at least a portion of light reflected from said screen overlayed on said target and received by said sensor; and transmitting said sensor data to a remote processing module configured to adjust a color property of said target obtained from respective target parameters derived therefor.