https://www.guru3d.com/news-story/noctua-presents-new-chromax-line-fan-and-heatsink-accessories.html
 
Noctua today presented new additions to its chromax line of black, colour-customisable cooling fans. The new chromax.black.swap versions of the award-winning NF-A20, NF-A12x15, NF-A9, NF-A9x14 and NF-A8 fans as well as the corresponding NA-SAVP5 and NA-SAVP6 anti-vibration pads now give customers the option to colour-coordinate Noctua 200 mm, slim 120 mm, 92 mm, slim 92 mm and 80 mm fans with individual build designs and popular colour schemes such as all black, black and white or black and red.

"First introduced in 2015, our chromax line is aimed at customers who value individual, focused build aesthetics just as much as class-leading quality and performance," says Roland Mossig (Noctua CEO). "With the new chromax.black.swap models, we're broadening the scope to include fan sizes other than the regular 120 and 140 mm formats, some of which should be particularly attractive for ITX and Small Form Factor builds."
 
I have to admit that I like the fans much more than their old brown color fan scenario. Having very unique sizes also will help ITX builds by keeping the fan sizes smaller.