How to remove background opacity in Parallax One theme

If you want to remove background opacity, then you need to install the plugin  Advanced CSS Editor and in Appearance -> Customize->Advanced CSS Editor and add add this code to the "Global CSS" area:

.overlay-layer-wrap, .call-to-action .section-overlay-layer {
    background: transparent!important;
}

It will remove background opacity and if you want to change the overlay color then you can use this code:

.overlay-layer-wrap, .call-to-action .section-overlay-layer {
       background: rgba(223, 223, 323, 0.7)!important;
}

Change color values as you wish.

In case of any query, feel free to contact our  support forum.