Results of embedding Google Maps can become ungly very fast, disrupting color space and visual flow, mitigating its benefits by posing a source of distraction. Custom maps are a great way of improving the UX of your webapp without working to hard.

Snazzymaps enables editing of map presentation parameters available thru Google Maps API to be done in a simple and visual way. It contains a two-stage WYSIWYG editor, which produces map presentation styles and maps based upon those.

Since embedding snazzymaps requires Google API Key generation and billing activation, a native WP Plugin is provided for codeless implementation.

Further implementation of added functionality can be studied at an example of Snazzy Info Window plugin.