Problem solved. My son accidently changeed the Colorsettings of my Acer screen form cold to warm, wich led to an increase of brightness so grey became white.
lately I switched from Win7 to Win10 and something was wrong with my civilian administrator screen. on Win 7 every colony without an admin was highlighted in a grey-ish colour. Now on Win10 they are white like administrated colonies.
How do I get my highlighted unassigned colonies back?