Color specific cells in a table

Color specific cells in a table

[Fabrice Couvreur]

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Hello,
This table will be used to illustrate Pascal's triangle. I manage to color
the cell (2,0) but I would also like to color the cells (2,1) and (3,1). Is
it possible ?
Thank you
Fabrice

\usecolors[X11]

\starttext
\startluacode

  local background_one = {
   align = "middle",
   style = "type",
   background = "color",
   backgroundcolor = "thistle2",
   foregroundcolor = "white",
  }

   local background_two = {
   align = "middle",
   style = "type",
   background = "color",
   backgroundcolor = "peachpuff",
   foregroundcolor = "white",
  }

  context.startxtable({"align={middle,lohi},
width=1cm,offset=0.8ex,bodyfont=9pt,framecolor=cyan"})
  context.startxrow()
  context.startxcell({"background=color,backgroundcolor=thistle2"})
  context("")
  context.stopxcell()
  for j = 0, 7 do

context.startxcell({"foregroundstyle=bold,background=color,backgroundcolor=thistle2"})
  context(j)
  context.stopxcell()
  end

context.startxcell({"foregroundstyle=bold,background=color,backgroundcolor=thistle2"})
  context("\\dots")
  context.stopxcell()
  context.stopxrow()
  for i = 0, 7 do
  context.startxrow()

context.startxcell({"foregroundstyle=bold,background=color,backgroundcolor=thistle2"})
  context(i)
  context.stopxcell()
  for j = 0, 8 do
  context.startxcell(j>i and background_one or i == 2 and j == 0 and
background_two)
  context("")
  context.stopxcell()
  end
  context.stopxrow()
  end
  context.startxrow()
  context.startxcell({"background=color,backgroundcolor=thistle2"})
  context("\\dots")
  context.stopxcell()
  for i = 0, 8 do
  context.startxcell()
  context("")
  context.stopxcell()
  end
  context.stopxrow()
  context.stopxtable()
\stopluacode
\stoptext

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