# Field value
You can assign fields from your dataset and apply conditional formatting based on the specified color. Let's consider a Benchmark dataset - each benchmark is represented by a designated color which is part of the source data.
Dataset with colors assigned
Let's look at how to setup conditional formatting based on a field from your data source.
Assign the text column containing the color scheme to the Writeback Matrix visual. You'll see a **Field value** option in the **Format by** dropdown.
Select the text field that will be used to assign colors from the **Based on** dropdown.
Selecting the field to drive the colors
**Format font color**
The font color for the Actuals measure is changed based on the Benchmark indentifier text field. To apply conditioinal formatting on the font color, select the **Font** option from the **Color for** dropdown.
Font color updated based on source data
**Format background color**
To change the cell background color select **Background** from the **Color for** dropdown.
Applying a background color based on a source field
**Using Auto font color**
When the **Auto font color** option is checked, Inforiver assigns a font color which will have maximum visibility against the backgroun color.
Uncheck this option to assign a custom font color from the **Format** menu.
