It seems that the color setting for Forum/Container/Text1 is shared with the Board/Description/Text. Can it be two different properties so that the Forum/Container/Text1 could be white, for example, and Board/Description/Text be grey?
The description text can have its own color. Visit your admin area and select Themes > Advanced Styles & CSS. On this page, select Categories (Board Lists) > Descriptions and change the text color field to your preferred color.