As Old as the Hills (1) - S3-E25
Continuity mistake: Before Cotton asks Didi for a cigar she is wearing a pink dress over a light purple shirt. Whilst she is lighting the cigar she is now wearing an orange top.
As Old as the Hills (1) - S3-E25
Continuity mistake: After the party when Peggy is fighting with Hank she tosses the cutlery into the sink, and the dishes are blue. The next shot of the dishes we see they are now green.