I like to use "E"-shortcut often. Noticed that, sometimes it would handy if brush' cursor would be example red when eraser mode, like it's green now normally. So you see instantly is it paint or eraser mode.

Yes, there's been a wishbug for this for a while, but noone has had the time to look into it: https://bugs.kde.org/show_bug.cgi?id=368331

Ah, thank you.