Saffron with most any shade of green looks good to me. Nice combination.

The dark blue looks OK for casual, but I'm not sure if I would wear blue with any kind of a jacket. The saffron is almost like khaki slacks or blue jeans, it can be matched with most any color.

Black would also be an interesting combination, for casual.

Personally I have several very light yellow dress shirts from J.C. Penny in what they call Ecru, that goes well with the saffron.

The chestnut belt is absolutely perfect with the saffron. Just got my order this week. Thanks.

Tom