Unzip and navigate to your FBW A320 folder inside the community folder. Find SimObjects/ Airplanes/ FlyByWire_A320_NEO/ TEXTURE. Move the existing CUP_LOW2_ALBEDO.PNG to another folder (as a backup) and replace with the new unzipped file.
Also go check out my discord. first 2 people to join will have early access to my mods for life!
https://discord.gg/2mJJj7ME