Did you have a little trouble distinguishing between teams at the World Cup opener? You weren’t alone.
During the opening game between Saudi Arabia and host country Russia on Thursday, people watching who have colour blindness complained on Twitter they had trouble identifying which team they were cheering for.
Why? The teams wore red (Russia) and green (Saudi Arabia), two of the colours people with a type of colour vision deficiency (CVD) are unable to distinguish between.
More than a few people were upset.