如何更改bootstrap css中的活动链接颜色？

I am using joomla 3 and bootstrap.min.js I am creating menu and giving special class in order to change hover, active, visited links and style of the menu. I could not find how to change active link color of menu. Suppose I have 2 menu. Home and Contact. When I am in Home it is red, I want to change this color. I could change a:active and a:hover. Here is code;I am using joomla 3 and bootstrap.min.js I am c