I didn’t spot coverage of this story on more major news sites. This Indian source seemed less editorialized than others:

Environmental activists break into Sylt Airport in Germany and spray an orange color on a Cessna Citation corporate plane.

It appears that the aircraft operator will incur higher costs. On one of the Twitter accounts, a video of some of the activists painting an airplane with orange paint is shared. The engine is fortunate to be covered while they are painting it.