GIGGIRIVA
Starting XI
absolutely all hair textures exported from fifa 19 nintendo have this problem. it's not such a big problem for me because i mostly play at sunset. i also thought that the solution might be to change the opacity levels (i guess it's the same as with reflex in boot's textures) - our textures i suppose need to be less transparent. the loss of data or color might be caused by the fact that after you edit you save into a compressed container. to avoid that try saving the file with file explorer and changing the setting to uncompressed for the texture image you replace.
I'm not sure how uncopress files but i will try. Thanks for the explaination.