Thanks, Edu. Meanwhile, I found out a solution with
\fcolorbox Paul On Tue, Oct 11, 2016 at 10:44 PM, edu Gpl <mandrivagn...@gmail.com> wrote: > add this code in Document setting > local layou: > %%%%%%%%%%%%%%%% > Style Law > > Category MainText > > Margin Static > > LatexType Environment > > LatexName bluec > > NextNoIndent 1 > > LeftMargin MMM > > RightMargin MMM > > ParIndent MM > > ParSkip 0 > > ItemSep 0 > > TopSep 0.5 > > BottomSep 0.5 > > ParSep 0 > > Align Block > > AlignPossible Block, Left, Right, Center > > Preamble > > \usepackage{mdframed} > > \usepackage{xcolor} > > \newenvironment{bluec} > > {\begin{mdframed}[backgroundcolor=blue!10,linecolor=blue!10,roundcorner=10pt]\quotation} > > {\endquotation\end{mdframed}} > > EndPreamble > > End > > %%%%%%%%%%%%% > > > > regards > > 2016-10-12 0:17 GMT+03:00 Paul Smith <phh...@gmail.com>: >> >> Dear All, >> >> How can one box a equation with a specified color? >> >> Thanks in advance, >> >> Paul > >