You have to be lucky to get a sunny day though. Of course it's Barcelona so that's pretty likely. But on a sunny day the colours are much deeper. The best lighting you get near the end of the day when the sun is low and shines the colours right across the whole church. It's an amazing kaleidoscope.
When I visited, there was a service and a column of light was hitting that huge hovering crucifix at an angle. It was absolutely intense.
> The best lighting you get near the end of the day when the sun is low and shines the colours right across the whole church. It's an amazing kaleidoscope.