This day was quite surprising.
I was searching around for little trees to realize some bonsaï, as I'm much interested in that art too.
The sky was totally overcast but I still took my camera, as always. And I was right: a bit before sunset, the clouds suddenly dissipated above me. In fact it was just a veil of stratus clouds and it was clear above. The sky totally changed of look in about 20 or 30mins.
Very good moment.