# background: red # optional color for card to set color directly without custom stylesheet
```
-View the (Custom Services)[customservices.md] file for details about all available custom services (like PiHole).
+View the [Custom Services](customservices.md) file for details about all available custom services (like PiHole).
If you choose to fetch message information from an endpoint, the output format should be:
-# Tips & Tricks
+# Custom Services
Here is an overview of all custom services that are avaiable within Homer.
```
items:
- - name: "Weather"
- url: "https://api.openweathermap.org/data/2.5/weather"
- location: "Amsterdam" # your location.
- apiKey: "<---insert-api-key-here--->" # insert your own API key here. Request one from https://openweathermap.org/api.
- units: "metric" # units to display temperature. Can be one of: metric, imperial, kelvin. Defaults to kelvin.
- background: "square" choose which type of background you want behind the image. Can be one of: square, cicle, none. Defaults to none.
- type: "OpenWeather"
+ - name: "Weather"
+ url: "https://api.openweathermap.org/data/2.5/weather"
+ location: "Amsterdam" # your location.
+ apiKey: "<---insert-api-key-here--->" # insert your own API key here. Request one from https://openweathermap.org/api.
+ units: "metric" # units to display temperature. Can be one of: metric, imperial, kelvin. Defaults to kelvin.
+ background: "square" choose which type of background you want behind the image. Can be one of: square, cicle, none. Defaults to none.
+ type: "OpenWeather"
```