We usually see spinning tops when the buying pressure and selling pressure has began to slow down. If a spinning top forms during an uptrend, it means that sellers are preventing prices from rising too high and a possible reversal in the direction of the market could be possible. The reverse is true for a downtrend and the market might move up after several spinning tops form in a downtrend.
For instance, the green candlestick shows that the open price is the low of the period while the closing price is the high of the period. This is a bullish candlestick (market goes up) and shows strong buying pressure. It could indicate continued bullish behavior or bullish reversal. The reverse is true for the red candlestick (bearish candlestick) and it shows strong selling pressure and could indicate continued bearish behavior or reversal.