Fractal Design just announced their new Prisma series of fans. Single color or Aura sync compatible ARGB fan options, also PWM options

https://www.fractal-design.com/home/product/casefans/prisma-series

As usual, the LED versions of these fans don't seem as great Stat wise than their non led counterparts (the 120mm PWM fan at 2000 rpm is 32db, so kinda loud) 

*Edit* fans are Aura Sync, MSI Mystic, Gigabye Fusion and AsRock Poly compatible across the board. Prices start at $20 for the SL and 24 for the AL