set boxwidth 0.4 absolute
set boxdepth 0.3
set style fill solid 1.00 border
set grid vertical xtics ytics ztics
set grid lt 0 lw 0.75
set wall z0  fc  rgb "slategrey"  fillstyle  transparent solid 0.50 border lt -1
set view 59, 24, 1, 1
set xyplane at 0
set xtics 0,1,10 offset  0.0, -0.5 add ("" 0)
set ytics 1,1,5  offset -0.5, -0.5
set xrange [0:11]
set yrange [0:6]
set pm3d depthorder base
set pm3d border linewidth 1.000
set pm3d lighting primary 0.5 specular 0.2 spec2 0
unset key

rgbfudge(x) = x*51*32768 + (11-x)*51*128 + int(abs(5.5-x)*510/9.)

set title "3D boxes with pm3d depth sorting and lighting" 
splot for [col=1:5] \
    'candlesticks.dat' using 1:(col):(col*column(col)):(rgbfudge($1)) with boxes fc rgb variable


Click here for minimal script to generate this plot