1. An information processing apparatus, comprising: a displayer; an imager; a display controller which displays a through image imaged by said imager on said displayer; an index image displayer which displays a predetermined index image being an index for imaging while being superimposed on said through image, wherein said display controller further includes a color acquirer which acquires a color of said through image, and a color setter which sets a color of said predetermined index image to a color different from the color of said through image, wherein said color acquirer acquires the color of said through image at a position where said predetermined index image is arranged.