This is a receiver plugin to set the default waterfall theme.
You can choose between the following standard themes:
If a wrong one will be set a default theme will be used and an error message will be shown in the console.
Add this lines in your init.js file:
Plugins.set_waterfall_theme_theme_value = 'ocean'; // set your desired theme here (see list above)
Plugins.load('https://0xaf.github.io/openwebrxplus-plugins/receiver/set_waterfall_theme/set_waterfall_theme.js');
Learn how to load plugins.