Here's a link to a good forum about Hornet that contains some photos that will be very helpful.
http://www.shipmodels.info/mws_forum/viewtopic.php?f=46&t=4866&p=217630#p217630
A few very interesting things to note in photos:
1. two SBDs parked among the B-25 Mitchells
2. a smaller aircraft parked on the port side aft (it may be another SBD). You can make out the rudder stripes which are barely visible under the engine of the aft-most port side B-25.
3. the proximity of the escort
4. look at the B-25 wingtip visible in the bottom right of the photo. It appears to have war games crosses somewhat painted out.
5. None of the B-25 propellers have yellow tips.
6. Some B-25s have their dorsal turrets covered, others do not.