Add Protect Alpha feature
hello devs, its me again after 3years of using flipaclip, first I'd like to say thanks so much for all the updates you've given to us these past few years.. flipaclip has evolved a lot since I started using it 3years ago and I have some more suggestions if that's no problem....there's this setting most art softwares have on their layers called"Protect Alpha" which when active on a layer, let's you only draw on whatever brush stroke is on that particular layer (google photo attached) this would help a lot with changing the colors of lineart and drafts without having to draw everything allover again in a different color...if this is do able, pls add this layer feature in any upcoming updates, thanks :)
I feel like having alpha lock would be an easy to implement but useful tool, to be able to alpha lock a layer so we are allowed to draw on currently drawn lines on the layer which would make tasks such as coloring outlines or shading much more easier. I also think having custom brushes of some sort would be amazing as well.