If it's any consolation, you should be washing your jacket quite often if you ride in mud, no matter the colour. That dirt/mud is getting ground in to the membrane, along with sweat, and affecting its ability to vent vapour and keep water out. Most - almost all - people don't wash their tech garments enough. Many think you're not supposed to wash them at all, which couldn't be further from the truth.
Jan. 8, 2021, 2:37 p.m. - Pete Roggeman
If it's any consolation, you should be washing your jacket quite often if you ride in mud, no matter the colour. That dirt/mud is getting ground in to the membrane, along with sweat, and affecting its ability to vent vapour and keep water out. Most - almost all - people don't wash their tech garments enough. Many think you're not supposed to wash them at all, which couldn't be further from the truth.