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. The TIA/EIA-598-C standard is the most widely followed guideline for color coding in optical fiber cables, both for loose-tube and. Generally, the chromatographic arrangement of the tubes within an optical fiber and the chromatographic arrangement of the optical fiber within a tube are as follows: If the number of optical fibers in a cable exceeds 12, how are they colored? It is International Fiber Chromatography, applicable to. The chromatographic arrangement of the loose tube within a general fiber optic cable and the chromatographic arrangement of the fiber within the loose tube is shown below: 1. Available in OS2/OM3/OM4 at factory-direct wholesale pricing. How to Identify Fibers in. ked with different colors and bar codes to facilitate identification. Hexatronic offers cables with color code systems according to all interna ional and national standards and for all types of fiber opti such as a tube, ribbon, yarn wrapped bundle or other types of bundle.