A recording data generation apparatus that is adapted to generate recording data for use in recording operation of a recording apparatus on the basis of image data, the recording data generation apparatus comprising: a display portion that is adapted to display the image data; a selection portion that is adapted to allow selection of a partial pixel from among pixels constituting the image data displayed on the display portion; a color range setting portion that is adapted to allow setting a color range on the basis of a color of the partial pixel; a determination portion that is adapted to determine whether or not a pixel constituting the image data is a pixel falling within the color range; a determination practice portion that is adapted to cause the determination made by the determination portion to be sequentially practiced with respect to a pixel adjacent to a determination-completed pixel on the basis of the partial pixel until a pixel adjacent to a determination-completed pixel becomes a pixel not falling within the color range; a pixel designation portion that is adapted to designate at least one pixel which is determined as a pixel falling within the color range by the determination portion; a color conversion portion that is adapted to convert a color pixel designated by the pixel designation portion; and a recording data generation portion that is adapted to generate recording data on the basis of image data resulting from the color conversion by the color conversion portion with respect to a color of each of the at least one pixel designated by the pixel designation portion, wherein the selection portion is adapted to allow selection of a plurality of pixels from among the pixels constituting the image data, and the color range setting portion is adapted to allow setting a color range on the basis of an average value of colors each associated with a corresponding one of the plurality of pixels. a display portion that is adapted to display the image data; a selection portion that is adapted to allow selection of a partial pixel from among pixels constituting the image data displayed on the display portion; a color range setting portion that is adapted to allow setting a color range on the basis of a color of the partial pixel; a determination portion that is adapted to determine whether or not a pixel constituting the image data is a pixel falling within the color range; a determination practice portion that is adapted to cause the determination made by the determination portion to be sequentially practiced with respect to a pixel adjacent to a determination-completed pixel on the basis of the partial pixel until a pixel adjacent to a determination-completed pixel becomes a pixel not falling within the color range; a pixel designation portion that is adapted to designate at least one pixel which is determined as a pixel falling within the color range by the determination portion; a color conversion portion that is adapted to convert a color pixel designated by the pixel designation portion; and a recording data generation portion that is adapted to generate recording data on the basis of image data resulting from the color conversion by the color conversion portion with respect to a color of each of the at least one pixel designated by the pixel designation portion, wherein the selection portion is adapted to allow selection of a plurality of pixels from among the pixels constituting the image data, and the color range setting portion is adapted to allow setting a color range on the basis of an average value of colors each associated with a corresponding one of the plurality of pixels.