Linear Gradient

background-image: -moz-linear-gradient(top, #6f828b, #122938);
background-image: -webkit-gradient(linear, 0% 0%, 0% 100%, from(#6f828b), 
                  to(#122938), color-stop(1,#FFF));
         

Angle Gradient

background: -moz-linear-gradient(right top 260deg, #ffe930, #ed9700);
background: -webkit-gradient(linear, right top, left bottom, from(#ffe930), to(#ffa200));
         

Radial Colors

background: -moz-radial-gradient(50% 50%, circle farthest-corner, #ff0000, #a00000);
background: -webkit-gradient(radial, 50% 50%, 0, 50% 50%, 100, from(#ff0000), to(#a00000));
         

Multiple Stop Colors

background: -moz-linear-gradient(top, #676767 0%, #262626 50%, #1D1D1D 50%, #000000 100%);
background: -webkit-gradient(linear, left top, left bottom, 
            from(#676767), 
            color-stop(0.5, #262626), 
            color-stop(0.5, #1D1D1D), 
            to(#000000));