If you are doing a lot of this, there is a decent approach but it's very long winded...
Override your DG so that when you add to the dataprovider (or when items are added to the DP) the objects in the DP get wrapped in a DGAware object. This object provides access to the wrapped object and exposes the relevant fields for checkboxes (isEditedYellow, isEditedBlue, etc). This keeps your underlying data object ignorant of any renderer related fields, and still allows you to set up the state of the renderer in set data. This is a fair bit of work mind...
