1. A method for inspecting a droplet discharge head comprising: generating illuminating light based on a color tone of a dot pattern of a droplet discharged from the droplet discharge head by selecting at least two of a plurality of illuminating light sources of different color tones, by combining lights from the at least two of the illuminating light sources, and by modulating the lights illuminated from the at least two of the illuminating light sources based on the color tone of the dot pattern; capturing an image of the dot pattern while a photographed region including the dot pattern is being illuminated by the illuminating light; and inspecting the image of the dot pattern using image processing.