How to change Blue accent color in EasyBlog?

Hi. I am using EasyBlog 5.0.30. In my installation, blue rgba(27,56,106,0.85) is the default accent color. Many buttons on the front-end are blue, and and in the composer toolbar with "Add Media", "Add Post", etc is also this same blue. My question is this: is there any setting that can change this default accent color in the back-end? Or do I have to change each separate element via CSS (I hope not)?

Thanks in advance for the advice-

Tim