'Komoot Map Theme? Modify Openstreetmap Theme / Tiles Style?

I know / understand that Komoot use leaflet for the mapping "software" and openstreetmap for the map data. But they also use a different map theme (map tiles) - its not the classic openstreetmap style. Does anybody know which service they use or is there a way to modify the openstreetmap tiles (creating an own theme) whithout losing the leaflet support?

Komoot example: https://www.komoot.com/guide/31731/hiking-in-the-highlands



Solution 1:[1]

A little late as an answer, but from what I could see they use a customized version of https://www.thunderforest.com, it is not written anywhere, but the similarities are many and there is a Komoot logo on the site's homepage.

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 bessone