Blue smoke after idling

Hello everyone , when I idle I have blue smoke COMMING out when I set off I assume this is a turbo seal problem when I boot it I get black smoke from the exshast , please advise where I can get the seals and any problems replacing them apart from sized bolts , or please tell me otherwise .
Thanks Graham

Could also be Valve Stem Seal…

Is the car high milage ??

Refurbishing Turbos is a specialist job as they need balancing afterwards as they spin at around 180,000RPM