By the way, that’s Daniel whom provided you with the custom css, not me.
I am Denzel..
By the way, I would like to know if this reversible, suppose back to default color
You can remove your custom css to revert back to default color.
Theme Options -> Custom CSS, and change custom color to #c3293f or there are other ways?
I do not understand what you mean by any other ways. It’s only possible to change it’s color using custom css.
You can use other color hex code. http://www.color-hex.com/