Being able to set the background color in Lightbox mode to something other than black (feature wish)

[lchabin]

This is in order to deal with sets of png pictures that are drawings in black with a transparency layer.
That can happen when you export some excel files into pictures.
Offering white color would be enough for me.
(just a low prio wish)

[johngnl]

Maybe this helps as a quick solution. If you need a white somewhat opaque background for all your pictures, just add these rules to lib/plugins/gallery/screen.less

.sl-overlay {
background-color: white;
opacity: 0.9 !important;
}
/* To be able to see the buttons change the color to a non white one. */
.sl-wrapper .sl-counter, .sl-wrapper .sl-close, .sl-wrapper .sl-navigation button,
.sl-wrapper .sl-counter:hover, .sl-wrapper .sl-close:hover, .sl-wrapper .sl-navigation button:hover {
color: black;
}