Styling of C1TabControl

Hello,

I`ve faced with a problem of styling C1TabItems in C1TabControl.
I can see that usual background color, selected color etc for C1TabItems in TabItems panel are using some colors with Gradients, my goal is to make them solid colors in TabItems header backgrounds. Is there a way to do it, is there a way to avoid copying the whole styles and editing them?

Thanks.