This is a first go at how I think it would make sense to work with styled-components.
We can break down the sytled components by general categories.
In this instance we have a Forms category in the form.js file which will contain HTML elements relating to HTML forms.
If you need form elements you will just import in this styled-components module into your component file.
This will allow for cleaner and less noisy react component files.
In addition I feel this structure will facilitate the creation of a style guide and reduce duplication of styled-component definitions across react component files.
You can see in the provide sample files that we are using the Input and Label styled-components in multiple files.
They have been defined in a single place, and are brought in through your run-of-the-mill module import syntax.