ALLAH (SWA) ordered us in his holy book to recite the Quran with tajweed recite the quran modulatingly." the system of tajweed serves as a guide to improve the style of quranic recitation . It was in this way that the holy quran was revealed to prophet Mohammed (PBUH) and also the manner in which he recited it. Therefore, the reader of the holy quran longs to achieve the promise of Prophet Mohammed (PBUH):"whoever recites the quran correctly and proficiently will be with the bountiful dutiful writers (the angels of the preserved tablet - Al lauh Al Mahfuz). Based on a practical understanding of phonology, we have color-coded the place of some letters to facilitate the correct recitation of the holy quran. This had enabled us to classify these letters within 3 possible categories to enhance the reader's knowledge and remembrance of tajweed rules. The letters which requires expanded vocalization. We used red color to highlight these letters. The letters which is nasalized. These letters are green in color. the dark blue color indicates the emphatic of the letter (R), the blue color indicates the unrest letters-echoing sound- (qualquala) While the letters which are written but are not pronounced. These letters are gray in color.