I have this code:
BarChart[{{Style[0.408808, Black], Style[0.0944349, Purple],
Style[0.132875, Blue], Style[0.203982, Green],
Style[0.1599, Red]}, {Style[0.183654, LightRed],
Style[0.228122, LightGreen], Style[0.164212, LightBlue],
Style[0.12381, LightPurple], Style[0.300202, Gray]}},
BarSpacing -> None, PlotTheme -> "Detailed",
ChartLabels -> {{Experiment, Theory}, None},
LabelStyle -> {18, GrayLevel[0]}]
which produces
How can I hatch the the bars in the Theory part with white lines?