@shavesophere sorry I wasn’t too descriptive!
Here’s the example from the repo with the added ‘small’ class, forth line from the top:

  {
    module: 'MMM-forecast-io',
    position: 'top_right',  // This can be any of the regions.
    classes: 'small',
    config: {
      // See 'Configuration options' for more information.
      apiKey: 'abcde12345abcde12345abcde12345ab', // Dark Sky API key.
      // Only required if geolocation doesn't work:
      latitude:   16.77532,
      longitude: -3.008265
    }
 }

Hope that helps!

@pyrosmiley Hello! The precipitation graph is created using an HTML Canvas so unfortunately the colors cannot be tweaked by CSS apart from the border. The Javascript will need to be modified to support additional colors. Here is where the color is set for the curve and further up it draws the horizontal lines and tick marks. Ideally these colors are configurable. I’ve added an issue to the repo to track it!

I’m knee deep in another project, so if someone wants to take a crack at it, please be my guest :)

The Google API has been shut down, which is why the stocks module is not working. I’m not sure about the others…