How to understand Candlestick charts?

Can someone help me to understand candlestick charts? I can see sometime even price close for current day is higher than previous day but candlestick colors shows RED ???

Red or green is not based on if market went up or down in candlesticks, if closing price is higher than opening price the candle is green otherwise it is red. Check this website, and also look for the bullish/bearish patterns section. 

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