Since the earliest days of fiber optics, multimode cables have typically been color‑coded orange, black, or gray, while single‑mode cables are marked in yellow. However, with the introduction of metallic connectors like FC and ST—whose bodies are difficult to color‑code—colored strain relief boots. For example, cable jacket color typically defines the fiber type, and can differ based on mode and performance level. These colors are typically chosen by industry standards bodies. However, there are some non-standardized colors and inconsistencies that you should be aware of. Let's take a closer. Color codes make it easy to identify these patchcords which all have SC connectors: aqua cable and connector indicate 50/125 laser optimized fiber on the cable to the left. For instance, standard multimode OM1/OM2 fiber patch cords are often beige or black, while OM3 and OM4 variants are aqua and magenta, respectively., "12 Fiber: 8 x 50/125, 4 x 62.