Enfold Header Transparency Ease

I changed the glossy header so it’s not as transparent at the top, but when I scroll down it switches back to being more transparent before turning solid. What is the CSS to change the transparency options of the header when scrolling down so it doesn’t get lighter before becoming solid?

Make sense?

Here is a link to the page: http://natefx.com/henkeldenmarkdev/

Thanks,
Nate