based on xard's indicator

How candles are colored now

Blue candles show only while the candle’s close is at or above the filter MA. While the close is below it, blue candles are drawn white.
Red candles show only while the close is at or below the filter MA. While the close is above it, red candles are drawn white.
This applies to both real trend candles and flipped neutral candles.
Neutral candles after a blue trend turn red only once price is below the MA, which is also when red candles are allowed to show.
Neutral candles after a red trend turn blue only once price is above the MA.
At any other time the neutral candles stay white.