Although "My Blonde-Haired Brunette" (when Laura dyes her hair blonde) was the ninth episode filmed during the first season, it was the second episode to be aired. Carl Reiner was so impressed with Mary Tyler Moore's rapid development that he wanted to showcase her in an episode as soon as possible.
This episode, along with the episode October Eve (1964), was colorized and broadcast in December of 2017.
Sally mentions her boyfriend "Woodrow Glimscher" when she and Buddy and Rob are in the office. Obviously the precursor to "Herman Glimscher" as she also mentions that he has a "mother problem". Interestingly, she also mentions her date for the night as "Herman" who Woodrow's mother introduced her to. She describes him as "Bleechh". In later shows, she references Herman similarly.
On some aired versions of this episode, when Laura comes in to wake Rob she opens the curtains first but when she is setting the clock ahead the curtains are already closed again with no time for her to do that before she leaves. In the full episode you see the full scene, and Rob asks her to close the curtains before she leaves.