The slide "start simple" why not

fun whichColor(str: String) = if(str == "blue") Color.Blue else Color.Black

I wanted to introduce some of the syntax sugar gradually, to allow people to acclimate to some of the language parts where Kotlin is different from languages they might already know – a few slides later, I also bring up expression bodies. Your implementation is of course just as valid! 🙂

Yeah, Is see it now.