borderColor += box(LinearGradient(0.0, 0.0, 10.0, ...
# tornadofx
a
borderColor += box(LinearGradient(0.0, 0.0, 10.0, 10.0, false, CycleMethod.REFLECT, Stop(0.0, Color.RED), Stop(1.0, c(0.0, 1.0, 0.0))))
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