Photographic colours through solar scopes are always added manually in processing, but Paul's are reasonably close to what you'll see through a Coronado or a Lunt (I've owned both).
Note that the many solar features shown in Paul's photos are only as clearly visible through a double-stacked filter configuration. Single Ha filters aren't capable of quite as much visual contrast, although there's still plenty to see. The Venus transit will be clearly visible through a single filter configuration scope.
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