I\'m obviously missing something stupidly simple here. I have images with a white background so I want to be able to edit the arrows on the Bootstraps Carousel so they are v
In bootstrap 4 if you are just changing the colour of the controls you can use the sass variables, typically in custom.scss:
$carousel-control-color: #7b277d;
As highlighted in this github issue note: https://github.com/twbs/bootstrap/issues/21985#issuecomment-281402443