hmmm. If it's any help, many people talk about 'green days' and 'meat days', which isn't strictly true, but does give a fairly good pointer.
Meat/fish tends to be restricted on a green day - you can either syn them (they'll be HIGH in syns on a green day), or measure them and use them as HEbs.
Pasta, rice, potatoes and pretty much all fruit & veg is free on green. Your HEa (one or two) is used to supply your daily dairy intake, and your HEb (two a day) covers your fibre, so is your cereals/breads/nuts.
Rather than getting misinformation from me (!) have a look on Slimming Worlds own website. EE is the plan they are mainly promoting now, but you will find all the info you need about green days in there too.