The green lines are just there to emphasize the continual strengthening of the RSI and MACD.
Bollinger Bands are calculated off of a 20-period moving average. The bands are two standard deviations on either side of the moving average. The dashed line in the middle of the Bollinger Bands is that moving average.
A 20-day moving average notes a near-term trend direction.
50-day, medium-term trend direction
200-day long-term trend direction.