A color-changing information symbol includes a board, a bulletin portion formed on the board, and a lighting device having multiple optical fibers to connect with and illuminate the bulletin portion. The lighting device contains a light source projecting light to the optical fibers and a transparent color wheel rotatably located between the light source and the optical fibers to change the color of light. Thereby, the bulletin portion shows twinkling and varying colors to make the information symbol attractive and conspicuous.