Help with Armadillo Custom CSS Styles

Creating a new site with an orange and white theme. All very easyjet.

Loving the new Armadillo stacks with the newsfeed, now pride of place in my orange footer. Trouble is my body is orange text on white, and my footer is white text on orange, but chooses the default heading colour (orange) for both.

If I set my default header colour to white, can anyone help me with some custom CSS that will override Armadillo’s settings and give me an orange heading for blog post entries?