Renk geçişli buton yapmak
.btn-inverse {
color: #ffffff;
text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.25);
background-color: #363636;
background-image: linear-gradient(to bottom, #444444, #222222);
background-repeat: repeat-x;
border-color: #222222 #222222 #000000;
}