If your rose is white, it's bleached. Probably in a week or two the pink tips will be white also. Once a anemone bleaches, it's hard to get it healthy again. I'm not saying it can't be done but you'll need very stable and pristine water conditions, the correct lighting and variety of foods soaked in a vitamin like selcon or zoe fed twice a week . Any foods fed should be chopped up small and squirted onto it's tentacles with a turkey baster. The smaller the pieces the better as the anemone uses a lot of energy to digest the food so it will be less stress with smaller bits of food. As long as the tentacles are sticky it has a chance to survive. I know it sounds like a pain in the butt but these are very fragile animals to begin with and a unhealthy or stressed one is twice as fragile. Marine cuisine or if your lfs has Rods frozen food, these would be a good choice to feed or you can visit your local seafood market and get a couple each- raw shrimp- clams- scallops-squid- or any non oily fish and make your own food. What ever you do just be sure it is chopped up small.
If you can post the kind of lights you have- how long the tank has been set up and your water parameters(temp-ph-ammo-sg etc). One last thing, if your clown is too rough with the anemone it can also stress it out, a thing called loving it to death.
Well I hope this helps a little and like always this is only my opinion and i'm sure others will add their .02 Good luck
