you have to take a camera and microphone and tape the video and sounds in real life then feed the altered colored image and sounds with the high or low voice back into the ar glasses. everyone would want to use it to hear funny voices and see colorful pictures.
i would if i could but its not a skillset i have because i dont make games just console programs, and i dont have a ar goggles or passthrough vr headset to test on.
i wonder if i should learn programming and make it like you suggest since the hw will probably be available in the future and i could make it then, and nobody else probably will. programming is so hard to keep at, i get bored learning it.