my-nvim-lua/lua/web-devicons/lua.lua

require'nvim-web-devicons'.setup {

 override = {
  html = {
    icon = "",
    color = "#DE8C92",
    name = "html"
  },
  css = {
    icon = "",
    color = "#61afef",
    name = "css"
  },
   js = {
    icon = "",
    color = "#EBCB8B",
    name = "js"
  },
   png = {
    icon = " ",
    color = "#BD77DC",
    name = "png"
  },
   jpg = {
    icon = " ",
    color = "#BD77DC",
    name = "jpg"
  },
   jpeg = {
    icon = " ",
    color = "#BD77DC",
    name = "jpeg"
  },  
  mp3 = {
    icon = "",
    color = "#C8CCD4",
    name = "mp3"
  },
   mp4 = {
    icon = "",
    color = "#C8CCD4",
    name = "mp4"
  }, 
    out = {
    icon = "",
    color = "#C8CCD4",
    name = "out"
  },
    toml = {
    icon = "",
    color = "#61afef",
    name = "toml"
  },

  lock = {
    icon = "",
    color = "#DE6B74",
    name = "lock"
   }
 };

}