Playframework - Scala GIF Pixel

gistfile1.scala

import org.apache.commons.codec.binary.Base64

def pixel = Action {
    val source: String = "R0lGODlhAQABAJAAAP8AAAAAACH5BAUQAAAALAAAAAABAAEAAAICBAEAOw==";
    val byteArray = Base64.decodeBase64(source.getBytes())
    Ok(byteArray).as("image/gif")
}