Sub-titles suddenly change colour

I updated SiteOrigin recently and it seems that all of my pages have changed the colour of the sub-title part.

For example: This PAGE should have a grey subtitle ‘Magazine Advert Design’ .

This has happened for all the seperarte pages from the Portfolio PAGE

Is there a way I can change the subtitle for all the pages at once, or do I have to do each one?

Many thanks in advance.