Moths and wings color

Long time ago I watched a science documentary that was examining animal colors and ability of other animals to see a certain spectrum of colors. The whole show was on the subject of animal vision where this case of shifted visible spectrum of colors is just one of the interesting features.

So, most evening/night moths (or such?) appear to us as nothing but shades of gray because human visible colour spectrum is too narrow. What they did in this documentary is they moved across the spectrum of visible colour to reveal that gray-ish moths are in fact lively with color. Meaning, they are the ones who can see it so it’s a neat way of adapting.

At the time I was fascinated with that evolutionary step but I seem unable to either locate that documentary or any additional information on this.

Or, am I way off here?