WB SOCKS7 Pairs of Boys Stripe socks - Rugby Stripes

What size socks do i need for older boys size 4?

Would the 11-14 age fit a size 4-5 37-38?

Are the sock the colours shown in the photo as I specifically need the red and black?

Hello are these socks in shoe size not age? As in if my child is in size 10 shoe which size do I need? Thank you