Whelen Do Whelen Dashmiser 52 Series Lens come in multi-colour in one lens?

I've been trying to find a dual colour strobe whelen dashmiser DMPS1 amber/white lens but I'm unsure if they were ever made, can anyone give me some help?

 

[shues]

This was accomplished using one half-filter behind a clear lens.

 

[cabunty]

Some people were known to make them by cutting two lenses and glueing them.