Dear Collaborator,
Please follow recommendation #10:
"Do Not Use Font Color or Highlighting as Data"
from
Karl W. Broman & Kara H. Woo (2018) Data Organization in Spreadsheets, The American Statistician, 72:1, 2-10, DOI: 10.1080/00031305.2017.1375989
Meanwhile I'll try to remember how to read the colors of the highlighted cells in R...
https://www.tandfonline.com/doi/full/10.1080/00031305.2017.1375989