So many Sabers, so many voice actors for them. Especially regular Sabers.

So what's up with those blue veins coming from under the clothes of the third from the left Saber ?

Over accentuating her collarbone?

SinnerBeta said:
So what's up with those blue veins coming from under the clothes of the third from the left Saber ?

It's the outline of her hair, as you can see some gold if you look closely enough.

Likewise, you can check Saber Extra and notice that her hair is outlined in red instead.

SinnerBeta said:

So what's up with those blue veins coming from under the clothes of the third from the left Saber ?

If you look a bit closer you notice that each character has their armor/battle mode standing back to back with them.

So, left to right...

Zero
Lily
Staynight
Extra
Alter
Prototype

who are these servants?