Honestly Rossio I think it varies with the anemone, to me it seems they all have different personalities.How is your anemone???? I've noticed that sometimes mine during the day it closes... maybe the light? it is just for a couple of minutes I think, may be one hour... does yours do the same? :0)
Currently my anemone has been a complete blessing! He has stayed in the original spot that I put him in (well kinda, he did move a little to put his foot below a rock and have the ability to stretch out completely during the day).
He only closes up some nights, especially when the skunk shrimp goes near him. He loves to eat, and devours his krill that I feed him once a week (two small krill)... I feel that his color has remained beautiful and he is much larger then when he was introduced. Hang in theere with yours Rossio, they need time to acclimate and then you will notice a big difference. Just make sure to do your water changes, and no drastic changes in temp, salinity etc...