Can't wrap Col/Row ?

I'm trying to wrap Col and Row in another component, so I can customize it with some defaults (for example, have all rows have a padding).

However, something as simple as this:
```
export class Row extends React.Component{

render(){
return <_Row {...this.props}>{this.props.children}
}
}
```

Renders the component totally useless (it gets rendered completely wrong). Is there any implementation detail preventing this?

How would I add some default styles to my Row/Cols?

Thanks.