Its more about the enclosure and diffuser than the LEDs, Times Square ball is Luxeon LEDs and Waterford lead crystal diffusers.
www.beadlight.com are one company who make glass diffused LED panels.
Modifying architectural fittings to LED source is often most expedient method, at least can guarantee client they`ll all be the same colour bin.
Something off the shelf architectural suppliers can appear not to understand or choose not to explain to their clients....
Cheers
Adam