Hello William,
Over the years I have seen these shapers (in pictures) in a variety of colours. The one I bought recently was in black, but I have seen then in blue, red and green.
I’m refinishing mine in the old LNER (London and North Eastern Railway) green, it’s a colour I like, it doesn’t match anything else in my workshop, but what the hell. lol. I may repaint some of my other machine tools to match it.
Whatever colour you paint yours, I doubt it will decrease it’s value.
Harry