How can I modify arrow of page overlap function? #9181

2-overlap_arrow_32.lua

local Screen = require("device").screen
local IconWidget = require("ui/widget/iconwidget")
local ReaderView = require("apps/reader/modules/readerview")
local addWidgets_orig = ReaderView.addWidgets
ReaderView.addWidgets = function(self)
    -- Run original code
    addWidgets_orig(self)
    local arrow_size = Screen:scaleBySize(16 * 2)
    self.arrow = IconWidget:new{
        icon = "control.expand.32",
        width = arrow_size,
        height = arrow_size,
        alpha = true, -- or false, if you don't want transparency with your big solid black icon
    }
end