Forum:KB:Pietts uniform color

Hi wiki!, I'm having a problem that is haunting me for a long time. It might seem simple but...

What color is pietts uniform?

https://vignette4.wikia.nocookie.net/starwars/images/8/8b/Piett_btm.jpg/revision/latest?cb=20080328133105

https://vignette3.wikia.nocookie.net/starwars/images/1/1d/Admiral_piett.png/revision/latest?cb=20130320000559

In the movies it looks greenish. but in pietts legends page it looks grayish.

As you can see he has different uniform colors in these pictures. or is it that its the same uniform but in different light?, or was there 2 different uniforms used in the movies?

Thanks!