Opacity on all feed images

Ok,
I got it.
Maybe it will be helpful for you.
You need to delete/comment out some js code:
sb-instagram.js
everything under line: //Fade photos on hover
tha add some rules in css:
#sb_instagram .sbi_photo{

display: block;
opacity: 0.5;
}
#sb_instagram .sbi_photo:hover {
opacity: 1;
}

now you shoul have gray overlay to have custom color of overlay to this line:
#sb_instagram #sbi_images .sbi_item{
add
background: #ffffff;

you will have white overlay, you can change it as you wish!

Hope, that will be useful for someone ??

Oh, Sorry!!!!!!
Last change (color change) should be done here:
#sb_instagram .sbi_photo_wrap{

position: relative;
background-color: #ffffff;
}

Hey auona,

Glad you were able to figure it out and thanks for sharing your method!

If you have any other questions in future then just let me know ??

John