The file config.json is the base config that includes the vegetation index layers from s2_vi/layers.py. That file again imports snippets that are used several times from templates.py and colorramps.py. The data is calculated on the fly with functions in formulas.py.
The config of the general Sentinel-2 imagery layers is based on the Digital Earth Africa surface_reflectance config.
All user-facing texts are in German as requested by the project partners.