# Pattern of colors in the background based on palette, rotating over 5 s

berry """
def rand_meter(time_ms, self)
  import math
  var r = math.rand() % 101
  return r
end
"""

extern function rand_meter

# define a palette of rainbow colors including white with constant brightness
palette rainbow_with_white = [
  0xFC0000        # Red
  0xFF8000        # Orange
  0xFFFF00        # Yellow
  0x00FF00        # Green
  0x00FFFF        # Cyan
  0x0080FF        # Blue
  0x8000FF        # Violet
  0xCCCCCC        # White
  0xFC0000        # Red - need to add the first color at last position to ensure roll-over
]

# define a gradient across the whole strip
animation back_pattern = palette_meter(level = rand_meter())

run back_pattern