Three strange lights in the sky in the south of the Netherlands

30 minutes ago I filmed this with my phone from inside the car. I added some stills and Photoshop contrast effects to enhance the pictures, but the video footage itself is unedited. Can anyone explain to me what I was just looking at?? The Dutch news websites immediately explain it as being “polar stratospheric clouds“ but I did not see any other different colors. Here is the news article (dutch):