I want to use primary and secondary system combined

[XMistery]

As a secondary system I will test first this one :

Trigger to start betting will be sequence Red / Black / Red / Black ( and than placing the bet on Black )
or  the opposite sequence  with Black / Red / Black / Red and than I will start betting on the Red

With each colour change I'll bet on that colour of the last spin

I will look for two consecutive spins with the same colour

progression will be 1 chip ( if it is a miss increase to 3 chips )
than increase to 9 chips ( 9 x 5 USD chip equals 45 USD $ )
and than increase to 27 chip value as 4th bet

There is a space for fifth bet also but I don't think there is a need to step that far in real game

I'll check if in that 2.000.000 spin sequence is sequence with Red/Black/Red/Black/Red/Black/Red/Black anywhere inside that time series of roulette spins ?

As a primary system I think it is the best betting on Even/Odd numbers with mild progression and to stay inside table limits.

This "colour betting " will be active occasionally when it is the right moment. This is only secondary system and it will stay sleepy most of the time.

I need to hone my skills with roulette first 

I guess betting on Odd/Even number is with the same odds ( as Red/Black ) but I have more control ( logic )and several ideas how to do the progression and money management and to stay comfortably inside limits.

With first win on colour , betting is stopped and I'll wait for next starting sequence.
I assume during 30 minutes or one hour it will be once or maybe twice but that is Ok