For the life of me I can't figure out why I'm having this dark grey overlay on all my sliders.
I'm using Revolution Slider Version 4.6.5
Darlene Grace Arcenal answers:
Go to your /wp-content/themes/industrial/style.css and look for .slotholder::after around line 381 and remove background: rgba(58, 61, 65, 0.8);
Reigel Gallarde answers:
if you can add a css to your theme, add this..