Change header colours in panels

Hi there,

I am having trouble to figure out how to change the colour of headers of pages shown in grids. On a grid page I’ve managed to change the colours of headers. But they show up in a different colour in the frontpage panels. I can’t find the css where I can change these headers. I don’t mean the headers shown in boxes, but subheaders, generated from the gridpages underneath.

Hope someone can help!

Regards!