The core HeB options are the same on all plans - the only differences are (though i believe there may be slightly less choices on EE (I don't do EE very often so don't know for certain)).
Red days gives you HeB options for potatoes, beans/pulses, pasta, and some vegetables such as sweetcorn which aren't free on Red (but not rice).
Green days give you HeB options for meat/fish
As far as cereals, etc. go - pretty much the same as i say. So you probably haven't messed up at all.