hardcode colors, since qt tabpage is somewhat 'special'

Signed-off-by: Stanislaw Halik <sthalik@misaki.pl>
get rid of QFC artifacts

Signed-off-by: Stanislaw Halik <sthalik@misaki.pl>
Now that mouse tracking is gone, increase point bbox

Signed-off-by: Stanislaw Halik <sthalik@misaki.pl>
untested unbreakage

Signed-off-by: Stanislaw Halik <sthalik@misaki.pl>