Lovely! I wonder what blue you used. Looks like cobalt. Throughout the winter my balcony is regularly visited by blue tits. It's going very well for this species now in Sweden, but nobody knows why they increase in number. The colour of blue has had a very interesting history, and has been regarded as divine. I found this BBC documentary interesting:
"A History of Art in Three Colours" (Ep2: Blue)
Mats Winther
"A History of Art in Three Colours" (Ep2: Blue)
Mats Winther
