Southern Comfort had a light amber, brownish color, that almost seems reddish when we held it up to the light. Very similar to your typcial whiskey, and the untrained eye might not be able to tell the difference.
Sweet and fragrant, with hints of peaches and citrus. It didn't smell overly sweet, which was a selling point for those who are concerned about how cloying the typical liqueur is. One intern said he whiffed a hint of children's chewable aspirin when he sniffed the glass, but we're pretty sure he'd already been hitting the bottle.
The taste of whiskey was definitely apparent, but there was a sweetness there too, which is brought by the mix of peach liqueur and fresh peaches that are added to the liqueur. It wasn't syrupy, as some had feared, and it had a tangy tartness to it. We liked it on the rocks, but it was just sweet enough that we weren't a huge fan straight. We couldn't wait to try it in a mixed drink, because as soon as we initially mentioned it, everyone and his brother had a recipe for us to try.