Hi Pilou,

> Maybe the "Yellow cross" when you pass over with
> the mouse should be "dark blue"?

It's kind of good to have a lot of contrast and a kind of "lighting up" feel for the mouse-over state, a dark color like that would not quite feel the same.

But if you'd like to change it on your local installation, you can edit this image in the \ui subfolder: TreePlusMinusBackground_highlighted.png

Replace the yellow areas of that image with dark blue instead, and then your installation will have dark blue when you mouse over the +/- controls in the scene browser.

- Michael