how to change default selected cell color

This question - How to change selected cell color - was asked and appeared to have been badly answered at The answer seemed to incorrectly intrepret the question to mean how to apply a background color to a cell or cells.

Please answer the question: How to change the default selected cell color? The reason this is needed is because the default cell color in my Libreoffice 3.6 in Linux Mint 13 is a pale yellow which does not sufficiently stand out. Same in Libreoffice Writer: selection of text and table cells is this pale yellow.

Appreciate knowing how to change this. Please answer even if above average computer literacy is required to apply the solution.

obviously duplicate. If you want to comment the question at Libreoffice Calc Print Range or one of the answers, use the comment functionality.

NOT PREVIOUSLY ANSWERED. Current cell indicator ring is black. If document color is changed to a dark color (see Tools → Options → Application Colors → Document Background), the selection ring becomes invisible (does overlay cell separators). A black document background with Automatic font color is easy on the eyes and prints black on white.

Checking Tools → Options → Accessibility → Automatically detect high contrast mode of operating system causes the current cell indicator to be white.