Elliott Wave 3 Finder_v2

// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// created by Chris Guthrie © StonkSignaler
// I have added an input field for uesers to determine the last n bars to consider for highest highs and lowest lows
// July 13, 2022
// @version=5
//
indicator(title = "Elliott Wave 3 Finder_v2", shorttitle="EW_3_v2")
n_bars = input(50, "Consider how many bars?")

inp = input(close)

math_diff = ta.ema(inp, 5) - ta.ema(inp, 35)
myColor = math_diff >= 0 ? color.lime : color.red

// Extremes
theTop = ta.highest(math_diff, n_bars) == math_diff and math_diff > 0
theBot = ta.lowest(math_diff, n_bars) == math_diff and math_diff < 0


// Plots
plot(math_diff, color = myColor, style = plot.style_histogram, linewidth = 3)
bgcolor(theTop ? color.new(#87cefa, 50) : na)
bgcolor(theBot ? color.new(#ff00ff, 50) : na)