[LargeFormat] Tungsten Filter Reverse Use

[John Lakshman]

When using tungsten lighting, to remove the yellowish cast, filters are used.
E.g. No. 80A.  I'm trying to find out when such filters can be used in reverse.
For example with a natural daylight during sunrise and sunset, the cast is still
yellow/orange but perhaps not as intense as tungsten lit subjects.  If I used a
filter on natural sunlit (sunrise/sunset) subjects, would it render a blue cast,
or a white natural cast?  Anyone attempted this?  Thanks

John