Coloring Candlestick Bars By EXMA Crossover

Hello,

I need some assistance on how I can color my price bars in NT based on a EXMA crossover. What I'm trying to do is I think pretty simple, I want to color my candlestick bars by the by the crossing of a 15 minute EXMA with a 20 minute EXMA. I want this to occur on 3 minute candles, with the crossings computed by the 1 minute data.

If the crossing is up, I'd like to color the bar blue, and if the crossing is down, I'd like to color the bar red. If anyone could give me an help on how to do this I would be grateful. I have zero NT programming knowledge or experience.

Thanks.