Hello and welcome to SimplyDiscus!
Your fish may be red mellons. Some lines have white faces and yours may be these. At their age and size not being fully colored.is normal .As they grow they will probably color up more.
How long have you had these fish? Do they eat at all?
Discus can take days to weeks to settle in and eat regularly .. your other fish may be a bit too active though for these discus if they are timid.
Al