Hello There, Got Hurrendously Bad Sunburn 7 Days Ago, And

Hello there, got hurrendously bad sunburn 7 days ago, and it's still red, with peeling' flaking skin ' my questions are, will this almost lobster red despite getting sun blisters go back brown or normal skin colour soon, how long will it be red for?
I also have bad sunburn on my legs, it's gone purple, with red spots, almost looking like blood blisters all over my skins? Will they ever go? Help!
Jake