That’s a huge question. The basic logic of how to choose is covered in Offshore Cruising Encyclopedia. The key is to be realistic about the usage. For example, if you are cruising in the tropics, or with small children, light colors don’t make sense (in the tropics there is a problem with body/suntan oil and the kids, well, you can imagine, between magic markers and hot chocolate!).

The other issue is the design of the upholstery. Certain approaches work better over long periods, as the cushions are used and the fabric begins to stretch. The key is to work with an upholsterer who understands the type of usage you are talking about – and can advise you on the relative merits of different fabrics.