Three color knitting

In addition to my other topic, is it possible to double knit with three colors?
I want the thickness of a double knitted scarf but the requested pattern has three colors. I’ve already made a double knitted scarf but only in two colors and don’t really want to do fair isle or intarsia since it’s ugly on the opposite side but will if I have to.

I haven’t much experience with double knitting, but one suggestion is to make either a stranded scarf in the round and sew up the ends–no messy back and double-thick.

Or, if the pattern is more geared toward intarsia, then you can work a double-wide scarf and fold it over and sew it.

Just an idea.