[Access] Updating field based on separate table count

So I have an Access database that has 2 tables. One table has product Style and Color info, the other has SKU information. The StyleColor table ID is primary key linked to RugID in SKU table. Each table has a retired field (T/F) field. My query needs to count the number of sku.retired=False and if none exist then it sets the StyleColor.retired to TRUE. Its been a while since I have had any Access work to do, so I am a little lost here. Thank you for any help.