Fwiw, you should know that dwarf gouramis are rather fragile. They are gorgeous, and I used to keep them. I wanted to breed them. But I finally gave up because they kept dying. No reason could be found, other than perhaps inbreeding. Females did slightly better than the males, but not much.
They need a lot of plants, floating and planted, quiet water, no bright lights if there are not floating plants they can be shaded under. Quiet tank mates, not fast swimmers, and very clean water. If you have more than one, the planting is really important to prevent fighting, by breaking up sight lines.
Even given all that, they can die without warning or very shortly after showing symptoms, such as lying on the bottom, or draped over a plant. I wish they were tougher, I would love to have them again, but they aren't.
But their colours are for real. Achieved by breeding, not chemicals.