How to theme the controls of an Openlayer map? The Openlayers module comes with a default set of maps. It's possible to add layer templates, but it seems that the controls are always the same (see image). The controls exist of images that are located on a CDN such as http://cdnjs.cloudflare.com/ajax/libs/openlayers/2.13.1/img/zoom-plus-mini.png

Is there a way to style the controls of Openlayer maps? In other words to apply your own CSS or images to it?
The CSS is mostly contained in the js of the module. You can poke around in the openlayers user lists to maybe find a solution.