Sam BB V1

4 Bollinger Bands Ribbon with custom inter-band fills looks well-structured and mostly correct for Pine Script v5. It implements:

Four independent, customizable Bollinger Band sets (different lengths, MA types, multipliers, sources, colors)
Individual inner fills (inside each band)
Inter-band "ribbon" fills (the zones between bands on both upper and lower sides)
Toggle visibility per band
Clean input grouping

Design by Sam Mahboubeh, V1