You make " color coding " for cars in Metro Manila sound like a completely normal thing for a city of country to implement. Color coding for cars is ridiculous.
Every other country that wants to control the number of vehicles entering a congested city center simply says, " pay a little for the privilege ", in that way the Municipal Government receives extra revenues to help maintain the road and other infrastructures. But not Metro Manila: Oh no! Metro Manila says you can't use your car on certain days, which means that if you have an active business or other regular needs you must buy a second car or pay exorbitant fees to rent a car ... money to a few individuals in private enterprise not the Municipal, that is why most of the roads still have pot holes and broken concrete.
You say you " believe Makati City does not have window hours " on color coding days, I can tell you from experience that Makati City DEFINITELY does not have window hours on color coded days.
However, it is possible to drive along EDSA as it passes through Makati City, during the window of 10.00am and 3.00pm, on color coding days. BUT start your journey with ample time to spare otherwise you could find yourself still sitting in congested traffic on EDSA when the window slams shut and the crocodiles (oops, sorry, should I have said Traffic Enforcers) come out to feast on the luckless.
Color coding for cars in Metro Manila was a creation of the Metro Manila Development Authority (MMDA) designed to hold back development and instead pander to the few owners of car companies and rent-a-car agencies in preference to answering the needs of the driving public. Even the title " color coding " is ridiculous, our number plates are all the same color (unless you are "diplomatic" and then no rules apply ever), it's the numbers that are different.