Yep....chickens don't care how their coop looks long as its safe, has food and water, good nests and roosts, plenty of air and light.
It looks great to me and its a lovely thought.....but chickens like being chickens, roaming over the cool green grass, dusting in a fine dust bowl and sunning...
I think it is quite lovely but I would probably have painted it a dark color so that the chickens could blend their lovely signatures into the original paintwork. I have a feeling this lady will have her poor hubby out there every day trying to whitewash all that pristine white paint. Poor...