Change background color of Featured Slider

Hello - Ive tried 6-8 different themes and Ive finally selected Catch Box - it's awesome! Question: on the featured slider, is there a way to change the default background color of the slider area? Right now it is a dark grey. It would be great if I could set that to whatever background color I want. Also, as a bonus, I am wondering if there is a way to disable the post ID and Description from appearing in the Slider?  I am using graphics in the slider and it would be cleaner if I could suppress showing that ID and Description. THANKS for your awesome theme! Keep up the great stuff!   Rob