Add more themes (darker)

Hi,

I have found a couple of topics that requested darker or at least different themes. Currently the 6 default themes (in zoho mail) are extremely limited. Not only is a white background much more energy consuming it also is more strainful to the eyes.

Even as long as four years ago you already promised that you would look into creating more options. While I'm not a coding expert by far, I do know it is not that difficult to create either some new different themes or create an option to adjust own colours. Please make either of the above possibly, within a reasonable timeframe.

Thank you in advance.
Mark