Advance Layerslider Scroll down arrow button position

Hi, I followed this post:
kriesi.at/support/topic/add-scroll-down-arrow-button-on-advance-layerslider/

and the arrow works perfectly but I have 2 problems, it is not centered and I change color, now is white.
see image: http://i65.tinypic.com/2cmunpj.png

code is this:
<a href="#next-section" title="" class="scroll-down-link" aria-hidden="true" data-av_icon="" data-av_iconfont="entypo-fontello"></a>

and

.avia-layerslider {
z-index: 1;
}
#top .scroll-down-link {
top: -130px;
left: 99% !important;
}

thanks in advance