I agree with Paul. The B-1 and B-2 were more likely to have the interior in RLM 02, but with fittings such as switch consoles etc in RLM 66, along with the instrument panel.
As far as the two profiles are concerned, the top one is correct for the early period, where the 'ETO' scheme was over-painted with patches of Dunlegelb - the sand colour.
Not sure about the bottom profile - this could be poor reproduction of the original art work, or a particular 'local' scheme.
Once the Stuka units became established in the MTO, then 'dedicated' colour schemes were normally applied, and this, of course, would depend on the location and the terrain they were operating over, and based on. These schemes include overall 'sand', sand with a dark green or dark brown mottle, in the form of large patches, and other variations.
You'd need to establish the area of the theatre of operations Keith, and the approximate date, before committing to an actual colour scheme.
I probably have some profiles, and no doubt others here might be able to chip in with further info.
EDIT: Forgot to add this, the box art from the kit I recently bought. This is typical of the early scheme, and agrees with your first profile.