You can add coloured backgrounds to your Microsoft Lists.
1. From the view dropdown, select Format current view
2. Select Alternating row styles. By default, it will add a grey background. To change the colours, select Edit row styles link.
3. You are given two options for changing the colours. You can select to choose to edit the colours for Even or Odd rows by clicking the colour palette icon to the right. Select the desired background colour and click Save.
https://competenz.freshservice.com/support/solutions/articles/5000083082