I've spent hours on google trying to figure it out, and I haven't found anything. Whenever a charactor is effected by magic, their hair, eyes, mouth, weapon, shield, etc turn white. I'm pretty sure its a problem with the glow texture but I have no idea what to do about it.
Are they staying white, because an enchantment on armor does this normally, but the effect is temporary - an item with a permanent damage or drain effect causes the player to have a red glow, and on a PC this can be changed with mods.