Our roulette secret works only with few online roulette casino sites which are sort of exploited.As we stated that with play at casinos, the roulette game does not show the same color for 8 times in a sequence. 
We keep our patience till the point when we see four reds or blacks in a row. We start betting on the other color from the 5th turn.
First in the fifth turn we place a bet of USD5 on black, if we win we are +USD5 here. If not, we have -USD5.
If we lost we place a bet of USD10 on black in sixth turn, if we win, we are +USD5. If we loose, we are -USD15.
If I lost, we place the bet of USD20 on seventh turn., if we win this time, we are +USD5 overall. If we loose, we are -USD35.
And will continue so that is if we lose we will double the bet.
So the overall key is to keep patience and bet on the opposite color when you see a 4 turns of same colors.