Changing colors (and hover colors) in JKI Flat UI Controls Posted September 16 · Report reply thank. But it seems to me that changing the properties of buttons is not very convenient. JKI Flat UI 1.0 is more convenient in this regard - but there are fewer elements. Could it be somehow simpler and more universal to remake the buttons from JKI Flat UI 2.0, so that it is like in JKI Flat UI 1.0. Or only through properties?