Just put black ear pads on the DT 770 Pro : r/headphones
Beyerdynamic Dt 770 Pro 250 Ohm Limited Edition Pr - New Soft Replacement Ear Pads - Aliexpress
Kqtft Breathable Replacement Earpads For Beyerdynamic Dt770 Pro Dt880 Pro Dt990 Pro Ear Pads Parts Earmuff Cover Cushion Cups - Protective Sleeve - AliExpress
Amazon.com: Velvet Ear Pads Cushions Covers Replacement Earpads Foam Pillow Compatible with Beyerdynamic DT 990 Pro DT 770 Pro DT990 DT770 Pro Headset Headphone (Grey) : Electronics
DT 770 mod with 110 mm pads and leather strap : r/headphones
US Ear Pads For beyerdynamic DT990 / DT880 / DT770 Pro Headphones Soft Cushion | eBay