You can customize the look and feel of the fields one by one using the styles property in each built-in component. Depending on the component you can customize different properties.
Field
To know the properties that you can customize in the Field component you can check the FieldStyles.
Select
To know the properties that you can customize in the Select component you can check the SelectStyles.
Option
To know the properties that you can customize in the Option component you can check the OptionStyles.
File
To know the properties that you can customize in the File component you can check the FileStyles.
Errors
To know the properties that you can customize in the Errors component you can check the ErrorsStyles.