The phrase 'bitter design color image' seems to refer to an image that uses dark, muted colors to convey a sense of melancholy or sadness in its design. This could be in the context of graphic design, photography, or digital art. In graphic design, the use of 'bitter' colors can be an emotional design choice, often to evoke certain moods or to tell a specific story. The color palette typically includes shades of brown, grey, and dark blue, which can be found in various design styles, from minimalist to more expressive ones.