Problem: dealing with Switch formulas that are too long.
step 1: The following Switch formula will work in an Update Query.
Switch([field]= "red","01",
[field]= "yellow","02",
[field]= "blue","03",
[field]= "orange","04",
[field]= "green","05",
[field]= "purple","06",
[field] Is Null,"x")...