When Jill is making an "organic mask" the mixture is yellow. later when Jill and her sister have put the mask on their faces it's dark green.
Tim refers to his mother-in-law as Donna but in later in the series with Polly Holliday playing the character, her name is Lillian.
Correction: Tim actually says "Nana", not "Donna."
Correction: Tim actually says "Nana", not "Donna."
While Tim plays poker, a microphone is visible when Mark gets down the stair.