code: def test_hexstr_rgba_conversion_is_invertible(hexstr):
      hexstr = "#" + hexstr
      assert color.Color.from_hexstr(hexstr).hexstr == hexstr
  
file_path: kubric/test/test_color.py
imports: import pytest
  import hypothesis
  from hypothesis import strategies
  from kubric.core import color
label_desc: Use image node_id 8 for calling a global function with example usage: test_hexstr_rgba_conversion_is_invertible(hexstr) without return types