Would you do this to your vernis???

whoa! what a big difference after! you're brave to try taking the outer plastic as the true color really came out. but have you tried checking with the local LV if they can have it repaired? personally i don't care how our weather is here; these bags are supposed to last longer and certainly not discolor!
 
What are you using to take that discoloration off? You are doing a great job. Just think of the discoloration as a layer than has protected the beautiful baby blue color this entire time! Beautiful ending.