The best mod is making the plastic wheel covers black. I think that's the color on the Clarity FC. The remaining alloy portions then look sleek and elegant. The current grey color makes the wheels look very busy. Should be an easy and cheap mod for any of us. Just buy a can of black primer and a can of gloss black spray paint.
Apart from that, the looks of the Clarity was a bonus for me. The shape is highly aerodynamic (hence the high rear end and wheel skirts) and all the vents are functional and some are even hidden (like those under the front bumper). Except for ultra high performance cars, vents are fake panels and add ons used to pretend performance (even those on the best selling Audis, BMWs, and Mercedes). Authenticity is important part of beauty for me. The styling of the Clarity is functional and authentic, which makes it one of the most beautiful cars out there.