Panel.bgcolor
Get or set the Panel background color.
Example
--! luart-extensions
import ui
-- create a fixed Panel
local win = ui.Window("Panel.bgcolor sample", "fixed", 320, 200)
-- create a blue Panel
local panel = ui.Panel(win, 0, 0, 100, 100)
panel.bgcolor = 0xffcc00
panel:center()
await win:showasync()