% !Mode:: "TeX:UTF-8"
\documentclass[tikz]{standalone}
\usepackage{luacode}
\begin{document}
\begin{tikzpicture} [cm={1,-0.2,0.8,0.6,(0,0)}]
\begin{luacode*}
for x=0,14 do
for y=0,5 do
	local col='red'
	if (x+y)%2~=0 then
		col='green'
	elseif y%2==0 then
		col='blue'
	end
	tex.print(string.format('\\path [draw=black,fill=%s] (%d,%d) rectangle (%d,%d);',col,x,y,x+1,y+1))
	tex.print(string.format('\\path [draw=%s!50!white,line width=0.5mm] (%d+0.025,%d) --++ (0,0.975) --++ (0.975,0);',col,x,y))
	tex.print(string.format('\\path [draw=%s!50!black,line width=0.5mm] (%d,%d+0.025) --++ (0.975,0) --++ (0,0.975);',col,x,y))
end
end
\end{luacode*}
\end{tikzpicture}
\end{document}