Are this pair bigger than the laws so they can wear visible white socks when their team mates have all understood that they are in red.
Ronaldo wears Trusox (for those who don't know what they are: https://www.trusox.com ) and i assume that Nani does too. But they are available in red, and many other colours, so at this point it shows a stubbornness that they are choosing themselves to wear the white ones, so why can't referees tell them to remove the trusox and they have to wear a spare set of socks with out the trusox technology? (Portugal must carry loads of spares with them)