Combo 2/20 EMA & Accelerator Oscillator (AC)

This is combo strategies for get a cumulative signal.

First strategy
This indicator plots 2/20 exponential moving average . For the Mov
Avg X 2/20 Indicator, the EMA bar will be painted when the Alert criteria is met.

Second strategy
The Accelerator Oscillator has been developed by Bill Williams
as the development of the Awesome Oscillator . It represents the
difference between the Awesome Oscillator and the 5-period moving
average, and as such it shows the speed of change of the Awesome
Oscillator, which can be useful to find trend reversals before the
Awesome Oscillator does.

WARNING:
- For purpose educate only
- This script to change bars colors.