What does the gold trigger signify on the Remington 870?

From what I posted on one of my web pages....


Remington introduced the 50thAnniversary Model 870 Classic Trap Gun as a tribute to the world's best selling pump shotgun! This 12-gauge gun featured a 30-inch vent rib barrel with RemChoke barrel and semi-fancy American walnut stock and forend. Remington also began making the Model 870 Wingmaster Super Magnum with 28-inch vent rib barrel with RemChoke, chambered for 2¾-inch, 3-inch and 3½-inch shells. The company also manufactured the Model 870 SPS-T RS/TG Shotgun with fully adjustable Truglo rifle sights, 20-inch RemChoke barrel, black matte finish on metal parts and black synthetic stock and forend. Remington also made a Model 870 SPS-T Super Magnum Camo CL/RD Shotgun, with a 23-inch barrel with RemChoke and Leupold/Gilmore Red Dot sights, a Mossy Oak Break-up camo finish on metal parts and on the synthetic stock and forend.