Is it just me it really bothers that the hair colour options for Half-elves and hair- and skin colours for Half-orcs are way too few?

No. Also I had to reject HE as my MC due to lack of awesome beards for this race.

The lack of hairstyles for half-orcs is pretty bad too.

The Regonger style doesn't look like his portrait, and doesn't resemble the half-orc portrait. There's a spiky halfling style that would be perfect for both, but it's unavailable.

Worse, there's an even better one, but only for half-orc females.