elog entries text should be high-contrast

The text of elog entries should be shown with high contrast (black text on white background). Right now 2 shades of gray are used as background and the elog entry text is very hard to read.

As precedents: - the old mhttpd elog displays elog entries as black-on-white - the elog elog displays elog entries as black-on-white - google search displays search results as black-on-white - this issue tracker displays issue entries as black-on-white.