Hey lenuit,
first of all, thank you for the purchase!
To answer your question: I haven’t included a back-end option to change the background slider controls fill color so far, I will need to add this to the development list for Kabuki, thank you for bringing this up! In the meanwhile, you can change the fill color of the buttons (and captions) by adding a line of code at the bottom of the “style.css” files (should open by default when you go to “Appearance -> Editor”):
#slidecaption, #play-button, #prevslide, #nextslide { background-color: #000000 !important; }
replacing the #000000 with any other color on the hexadecimal scale.
If you also want to change the white arrows inside the buttons, you will have to replace the images in this folder with your own: /wp-content/themes/Kabuki/includes/supersized/img/. The arrow images are “back.png” and “forward.png”; the play buttons are “play.png” and “pause.png”.
Should you have more questions, do not hesitate to contact me!
Sincerely,
Andrew / Satori Studio