Why Are Some Meals on My Planner Grey?
If a meal on your Planner is grey, it means that is has been marked as a leftover. In other words, you have already previously prepared this meal earlier on in the plan.
Shading the meal grey serves to remind you that you do not need to cook the meal again. It also let's us know not to add the ingredients for that meal to your List again, since you've already made it.