Disabled color in the tree

[yorik]

I changed the color of the invisible items (or the items that have no display mode) in the Tree view from "dark" to "disabled text", because the dark color renders as almost black and on my dark desktop theme it is almost unreadable... It had bothered me for some time...

I think it looks fine on both dark and bright backgrounds, but if anyone has problems with this, tell me and I revert. git commit 07172e9

[wmayer]

Looks still good here. So no problem with your change.

[quick61]

Looks good here too, and I am using a dark theme.

Mark