Calligra Sheets uses the default system colors, so if one uses a dark system color scheme, the background appears dark and the text bright. Most people use bright color schemes, and that means that the choice of colors different than the default one (to highlight stuff), when seen against a dark color scheme tend to look awful.

Would it be possible to include in the interface section of Calligra Sheets Settings the options to set default background and foreground colors, besides the grid and page boundary?