I am trying that to no avail, my css is obviously inadequate.
Can you (or anyone else) please explain what I need to put there to change
(a) the dark grey
If I change the background of .errorOverlay nothing happens.
If I change the background of .xenOverlay , then the background changes, but has square corners which extend outside the rounded border radius
(b) the text colour
I cannot get this to change at all.
(EDIT) Fine, got the text colour to change thanks
(2nd EDIT: all sorted now, thanks again)