Allow for custom colors or an expanded option set for choosing colors for text, cell backgrounds, and tab labeling.
The color palette for excel online is extremely limited. Expanding the palette or allowing for a color wheel selection option or HTML color entry would be fantastic.
Totally agree! I would appreciate more of the rainbow shades instead of what I am currently seeing. So, either default to the rainbow shades, or let us have theme selections for the web based excel. Also, having the ability to choose a custom color would help for those odd colors needed once in a while.