I feel like Horatio's tastes run more to the sedate furniture color-wise, but I liked the colors of that original painting (though I think the furniture is being covered by sheets there with a title like 'wife in the country' or somesuch) and didn't want to depart from them entirely.
Well, there you go- H.C.'s all-natural phase, ha ha
He has a, uh, somewhat memorable combination of features.