Hello, With the latest version of lmtx, the background color of cells does not work. Thank you. Fabrice \starttext \startxtable [align={middle,lohi}, offset=0.8ex,background=color, backgroundcolor=red,frame=off] \startxrow \startxcell \m{\displaystyle\binom{n-1}{k-1}} \stopxcell \startxcell[width=fit] \m{+} \stopxcell \startxcell \m{\displaystyle\binom{n-1}{k}} \stopxcell \stopxrow \startxrow \startxcell \stopxcell \startxcell[width=fit] \m{=} \stopxcell \startxcell \m{\displaystyle\binom{n}{k}} \stopxcell \stopxrow \stopxtable \stoptext