An image forming apparatus, a method and a computer readable medium for color verification of an image forming apparatus are disclosed. The image forming apparatus includes a sensing device configured to read a color chart; and a processor configured to: perform a first color verification job; perform a second color verification job after the first color verification job when the first color verification job is interrupted, the second color verification job including one or more color patches from a previous color verification job; acquire measurement data from the previous color verification job; acquire measurement data from the second color verification job; and determine whether to re-use the measurement data of the previous color verification job based on one or more differences between the measurement data of the previous color verification job and the measurement data of the second color verification job.