Purple lines this is expectable bb indicator movement. Light blue is strong support level of 5 days movement.
2 strategy 1 blue - rise hight then light blue level, come back to level and then go up to 8500 2 reg - continue from part of blue
Total. I wait for a tight bb channel which always predict movement ( purple lines ), i expect btc to enter the green channel, next is movement around light blue support line which will show where price will go.