What Is A Good Purple Case Fan?

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-4460 3.2GHz Quad-Core Processor ($174.89 @ OutletPC)
Motherboard: ASRock H97M PRO4 Micro ATX LGA1150 Motherboard ($62.98 @ Newegg)
Memory: G.Skill Sniper Series 8GB (2 x 4GB) DDR3-1866 Memory ($44.99 @ Newegg)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($49.98 @ OutletPC)
Video Card: MSI Radeon R9 380 4GB Video Card ($189.99 @ Newegg)
Case: NZXT Source 220 ATX Mid Tower Case ($49.99 @ NZXT)
Power Supply: EVGA 750W 80+ Bronze Certified Semi-Modular ATX Power Supply ($44.99 @ NCIX US)
Operating System: Microsoft Windows 10 Home OEM (64-bit) ($87.95 @ OutletPC)
Case Fan: Corsair Air Series AF120 Purple 52.2 CFM 120mm Fan ($12.59 @ OutletPC)
Case Fan: Corsair Air Series AF120 Purple 52.2 CFM 120mm Fan ($12.59 @ OutletPC)
Case Fan: Corsair Air Series AF120 Purple 52.2 CFM 120mm Fan ($12.59 @ OutletPC)
Total: $743.53
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-01-18 16:39 EST-0500

This is the full build. His budget was $700 but he said he would spend more for the purple fans.