Nvidia is now selling SLI Bridges with LED lighting. The sturdy version of these bridges can only be purchased through their website and seems to be limited to the USA region. They look great, totally in the style of the reference coolers.

Designed after the reference cooler style the bridges are available in three SKUs; two, and three way SLI with an extra wide option for extra space inbetween the cards. The bridges are only available in the VS, Canada, Puerto Rico and US Virgin Islands. These bridges are designed for GeForce GTX cards with SLI support (GeForce GTX 770, GTX 780, GTX 780 Ti, GTX TITAN, GTX TITAN Black, GTX 970 and GTX 980). The SLI Bridge LED is supported on NVIDIA reference designs. 

They are priced rather spicy though, the two way connector based bridges cost 29.99 USD and the three way models cost 39.99 USD. There hasn't been any information shared about an EU release. BTW you need to have GeForce Experience 1.7 or later installed to get the LEDs on these bridges going.

Nvidia Starts selling Sturdy SLI Bridges with LED lighting