styling doesn't work when column name is changed in baselines example

Hi! I was going through the [baselines](https://github.com/esnet/react-timeseries-charts/blob/master/src/website/packages/charts/examples/baselines/Index.js) sample code to see how styling works. My understanding is that the key in the `style` object has to match the column name of your `TimeSeries`, i.e.:
```
const series = new TimeSeries({
name: "USD_vs_EURO",
columns: ["time", "value"], <-- this
points
});

const style = {
value: { <-- matches this
stroke: "#a02c2c",
opacity: 0.2
}
};
```
However, when I change both of these values to, let's say, "test" like so:
```
const series = new TimeSeries({
name: "USD_vs_EURO",
columns: ["time", "test"],
points
});

const style = {
test: {
stroke: "#a02c2c",
opacity: 0.2
}
};
```
the plot stops working.

Am I missing anything? Do I have to change `value` to `test` any other places? Thanks in advance!