Sorry to hear about this on your new phone.
There is a thread about this here - https://xdaforums.com/galaxy-s8/how-to/red-discoloration-samsung-galaxy-s8-s8-t3591325
Samsung have advised that using the RGB sliders within the settings may help resolve the colour imbalance. Try this perhaps? And let us know if it works for you?
You can be the judge. I've attached what my S8+ look like next to my s7 edge. I am not sure why the iphone camera makes the s7 so green but the s7 edge is perfectly normal and has the best whites.
Starting to feel better that I didnt get the S8+ now...
Least it seems on my S8 no red tint luckily.
There is a fix for it. It's not hardware related.. Search Google..
Verstuurd vanaf mijn SM-G955F met Tapatalk
And now in ENGLISH!!!Hola hoy e comprado un s8plus y me a venido con los bordes rojizos y dos roales rojizos a mediana altura qu se notaban bastante lo e llevado a la tienda y lo emos comparado con el de exposicion y se notava muchisimo . La semana que viene me traen otro haver como viene si me sigue llegando mal lo intentare cambiar por otro terminal .me parece vergonzoso que 1 tlf de 900e venga asi. Estoy muy decepcionado x ahora . 1 saludo amigos desde almeria