Under the TIA/EIA-598-C standard, the universal 12-color sequence is: 1-Blue, 2-Orange, 3-Green, 4-Brown, 5-Slate (Gray), 6-White, 7-Red, 8-Black, 9-Yellow, 10-Violet, 11-Rose, and 12-Aqua. This sequence repeats for cables with more than 12 fibers., 48, 96, or 144 fibers), the industry uses a “Tube and Fiber” system. The color sequence for 24-fiber optic cables is: composed of 4 tubes, each containing 6. ked with different colors and bar codes to facilitate identification. In all charts n this. This guide explains the latest EIA/TIA-598-D fiber color-coding standard used to identify fiber types, inner fiber sequences, and connector polish styles.