I reached for what I thought was the 5-stop ND but put on the Gold-N-Blue over the B+W F-PRO MRC Käsemann Circular Polarizer by mistake instead. At first the result was way too yellow (see second image in comment below) but as I slowly turned the Gold-N-Blue started seeing results that I liked - another lucky accident! For some reason the Circular Polarizer simply intensified the colors, did not vary the opacity as it normally does when you put two polarizers together.
So next time you need some spectacular sunrise or sunset color and can't wait for dust from some volcano to fill the upper atmosphere reach for the GnB and your CPL. :-)
Soak in the color, view large on black. N14324
Note - saturation seen here is from the filters not Photoshop or LIghtroom.