With tint brush active, holdinh ctrl key doesn't erase the color attribute. Similar to vertex brush (`VertexPaintOperation`) reduce alpha value from the influence Pull Request: https://projects.blender.org/blender/blender/pulls/136424
With tint brush active, holdinh ctrl key doesn't erase the color attribute. Similar to vertex brush (`VertexPaintOperation`) reduce alpha value from the influence Pull Request: https://projects.blender.org/blender/blender/pulls/136424