Background layer-opacity by default?

Hi there,

Just wondering if is there any way to set up the background layer with 30% opacity by default in story pro 5.5? Or maybe “force” the software to always show the drawings within this layers in a grey color? I guess a lot of story artists work the background in grey tones and I would like to know if there is a quicker way to do this instead of changing the brush color/lowering opacity all the time over the whole storyboard project https://mobdro.bio/ https://kodi.bio/.

Thank you!