There is provided a system including a memory and a processor configured to display targets on a display, each target having at least one target color, receive an input signal transmitted by a user device indicating at least one color value obtained from an image captured by the user device, the image including a portion of one of the targets displayed on the display, compare the color value indicated by the input signal with each of target colors in a target color database, determine the input signal is indicative of a first target of the targets based on a match between the color value indicated by the input signal and one of the target colors in the target color database, and execute an event involving the first target, in response to determining that the input signal is indicative of the first target of the targets.