Just a couple minutes ago I just made a really awesome looking exo and I noticed when on the tower that the light she has for eyes and mouth changed from what I set them. After doing research on the bug and making characters over again, apparently whatever color you set your 'face' to, the eyes/mouth take that color while on the tower and during cut scenes the lights are back to normal to whatever you had them set to. I'm not sure if Bungie knows of this and working on it but I just wanted to put this annoying bug out here for them to see.