This 2015 video is about a male moor frog. He is blue during the mating season.
Moor frows are rare in the coastal sand dunes of the Netherlands: they live there only on Texel, and on Schouwen in Zeeland province.
Natterjack toads are rather common on Texel.
Until about 1980, edible frogs were absent on Texel. After that, people introduced them, and they now live in most areas of the island.