Gray GP38-2 Indiana Railroad engine

I could find a lot of pictures of INRD engines painted in flat gray (with a white/red nose). Most of them are the older GP. I could also find some early CF7 in flat gray paint.

However, I did not find any GP38 or GP38-2 in flat gray. All pictures show them in the colors of the origin railroad or in the beautiful red dress.

My question is:

Did the INRD never paint a GP38(-2) in flat gray?

ps. I tried twice to join the Yahoo INRD group but did never got any response. It would be great if some member could ask the group owner to look into my pending application.