Yes this is normal. DepenRAB on the level of scarring, but the red marks will fade - this can take anything from 3 months to a year but they will fade - or sooner if the cysts weren't too bad.
Roaccutane gave me a few very bad cysts on my cheek and it took almost a year for the redness on one to fade (It was a really bad one and even though it was 'dead' it was still raised for like 3-6 months) - but most won't take that long.
Search the board, theres loaRAB of tips to speed up to process and reduce scarring, ask around here.