I haven't read the replies.. but, is the red magenta colour like brusing colour? On his head? This is called contusion and is extremely commen in bubs born as a result of extremely fast Labours. Caused by pressure changes from being ina weightless bubble of fluid to being squished through the birth canal and popped into gravity and air. in Labours that aren't crazy fast bubs body has more time to get use to the pressure changes

On a side note, jaundice is caused by the byproduct of bub breaking down red blood cells. All babies have extra cells to break down, some just take longer/have more trouble excreting the bilirubin (byproduct). Thus bubs get vary degrees of jaundice. Delayed cord clamping can increase jaundice only cause there is more to break down, but! Those extra cells still provided extra goodness to hub before hand