That is an absolute beauty Gai. And huge too! I love it and lilacs. We had a really dark purple one in the garden in France and there are a few here, growing in one of our hedges but I don't know what colour they are as they'd flowered by the time we came. Come over in a few weeks and have a good sniff! :D :D :D
Edited to asy - I take my hat off to you I really do - I'd NEVER have the patience to piece something like that. :-D