MYSTERY?

My entry for the Abstract Thursday Challenge. Marvellously hosted by Ingeborg.
I better tell what it is. This morning when we started our travelday to Germany, we stood waiting for the lightrail at the shelter, and when one looks up standing there, one sees a transparent glass panel with figures.
I took a photo and have added the blue colour.
When we had some time at Eindhoven and drank an espresso, I took another photo which I liked. In the extra.
A long day in the different trains, glad we arrived home safely.
Too tired to do much of anything, I just hope I will sleep well and will be fit tomorrow again.