[Plugin: Easy Digital Downloads] Download Button Color

Are you referring to the Add to Cart button, or the “Purchase” button on the checkout page?

The add to cart button.

Are you displaying the button with the [purchase_link] short code, or is this the automatically displayed one?

Displaying the button with the shortcode. I just checked and it looks like the download page (for the individual download) is displaying the button black.

Can you show me the complete short code you are using?

Yes, here you go.

[purchase_link id="231" style="button" color="Dark_Gray" text="Download"]

You need to use “dark_gray”, not “Dark_Gray”.

Can I change the blue color to hex number 003366?

Are you familiar with CSS?