left some green antifreeze when i refilled with blue?

[IASM]

I did my timing belt and water pump and thought i followed the intructions but i failed to turn the heater up prior to draining. I refilled with 3 1/2 gal. blue. I think there may have been some green since the color is not as blue. I didnt flush with water. I am thinking i should do it over with a drain and flush with water then refill. Your thoughts?
Rod

 

[goldNSX]

I don't think setting the heater to max prior to draining will leave you with a high amount of coolant in the system. If you didn't remove the three coolant hoses in the middle tunnel you will have much more coolant residual in the system. With changing them and the heater to max my car needed 14 Liters of coolant.

3.5 gallons are about 13.3 liters, so I wouldn't have sleepless nights about it. Happy motoring!