Should I be worried about my Toadstool coral?

[Jeff-Ft-Lauderdale]

So I noticed this discoloration recently. These pictures are from today. At first I thought it was just algae or something. But it is only appearing on part of it. My understanding is that the tissue on the "stump" part is dead so it won't affect the living part of the coral. Should I be worried about it?

 

[glency]

Looks good otherwise. Mine has the same but looks even worse. It’s still healthy and too big. I wouldn’t worry about it. But, I’m a noob.