Welcome to HCM
As you are taking Metaprolol for last 5 monts for Atrial Flutter
for which is a good drug belong to a Beta blocker
Yelowish coloration of skin and eyes is not very common in our clinical practice.
It is repoted in literature so you should report to treating Physician.
Because Beta blockers can not be stopped suddenly they need to be tapered off and may be switched to some other agent of same group.