Is it the paint or is the silicone lifting off the base?
Both are an issue, I guess, but, if it's the paint, I'd try to remove the surface & re-paint with a better paint or, if it's the silicone lifting, I'd try to remove the silicone, ensure both surfaces (but especially the painted surface) are absolutely clean & dry, then try to re-affix the silicone surface with a layer of fresh silicone (or, as a last resort, re-do the entire water thing - which would be a huge pity, seeing as how good you got it the first time around).