I had a pair of BL1s in dark green for about four years, flanking a green Avant, with green BL6000s bringing up the rear. I was never very keen about the sound of the BL1s; they were a bit antiseptic in the treble and very bass-deficient, although adding a BL2 subwoofer did help a good deal. I must confess I preferred the overall sound quality of the Penta IIs that preceeded the BL1s.
I eventually sold off the BL1s privately to finance the purchase of a pair of BL5s when they first came out. My dealer provided me with replacement shipping cartons, and I packed them up and shipped them off to their new owner in Canada. The sound of the BL5s was a vast improvement over the BL1s, although I have never really cared much for their appearance - a Danish friend refers to them as my samurai warriors. I much preferred the appearance of my BL1s, however, and still miss having them in my sitting room as the stunning pieces of metal sculpture that they were.
I also sold the Avant, much as I loved it, because the picture was just too small at my normal viewing distance, replacing it with a BS1 and a plasma screen. I still have the BL6000s, however, which do yeoman service as rear speakers in my bedroom system. I really loved that all-green system when I had it, however. It made a striking focal point in my contemporary home with all-white walls.