EMA 8/20 is an indicator made by @MushirSpeaks, which gives the trend condition of the selected timeframe. The EMA 20 is represented with a blue color and the EMA 8 is represented subjectively, when EMA 8 is above EMA 20 the color of EMA 8 becomes green which indicates that the market is in uptrend and a long trade can be planned upon the successful testing and structure formations, whereas when the EMA 8 is below the EMA 20 the color of EMA 8 turn red hence denoting that the trend has shifted to downtrend and accordingly a short trade can be planned. (Not Financial Advice)