How to color and add bold fonts to specific rows or cells?

Hello,

Thank you for posting on our forum.
 
If you require style cells depending on their content, we suggest checking out our conditional formatting feature: Conditional formatting | Flexmonster. It is used to format a cell or a range of cells based on specified criteria. In one report, you can create as many conditions as you need, and each condition can apply different formatting rules.
The user can easily configure conditional formatting using built-in UI controls of the Toolbar. Check Format - Conditional formatting tab of the Toolbar for more details.
 
If you want more flexibility on customizing the grid, we suggest checking out the following guide: Customizing the grid | Flexmonster. Unlike the customize cell, the functionality described in this guide is not limited to filtering cells based on their value and applying the predefined set of adjustments. Instead, you gain complete information about each specific cell and full control over its content.
 
Please let us know if it works for you.
 
Kind regards,
Illia