This is probably for Adriano since he's helping out in another thread:
http://wp-types.com/forums/topic/always-show-nextprevious-links-in-slider/#post-184543
In the slider mentioned there, I notice that the buttons are flashing a dark color when clicked on Iphone and Ipad. I don't know about other mobile devices but this doesn't happen on desktop. I've tried a work around but maybe you might see a quick solution? It's probably a simple css issue.
It's very noticeable when a light picture is there. These are a bit dark right now but you'll still see it:
http://stagebuddy.com/events/events/