There's no unusual smell or appearance to it but if the starter is any indication I will likely soon see a thin pellicle form as the CO2 blanket dissipates over time. I want to keep the stopper and airlock in place as much as possible to keep oxygen exposure to a minimum (I have no idea what's in the beer that might create bad flavors with the presence of oxygen, such as acetobacter or other spoilage bacteria). That means I probably won't have a lot of pictures, at least until a solid pellicle forms. Sorry, I don't want to ruin a year-long (or more) project just to snap pictures.
The tl;dr version is nothing unusual is happening. I will continue to keep an eye on it and report back when there are any changes.