The color variation in the aqueous solutions of anthocyanin crude extracts was studied in different pH range and anthocyanin concentration. The results are shown in Fig 3a to 3e and Fig 4. The color of the extract in the neutral pH was blue; but when the solution turned more acidic, the color of the crude flower extracts was shifted into the red color region which the bright red-pink color was achieved at pH 1.76. This is shown by a* values of both modes (Fig 3b and 3d) which their values increase as pH decrease. In contrast, when the extracts changed into a basic condition, the color of the extract was shifted to green, a* values decrease as pH increase