I would also like to point out that if you must, then using a Self Lavender Orp cross with Laced Orp will work but you would need to hatch a whole lot more than you would with Isabels as only 25% of F2s will be eb/eb and fewer than than will be proper eb/eb, Co/Co, Ml/Ml, Pg/Pg and lav/lav..The best rout to take is to breed Isabel Orps with Black Silver/Gold/Red laced Orps(I prefer Black Laced Red because that will create the most contrast) Take the best F1s and breed them together, hatch many F2s and you will get your Lavender Laced Orps