> In the above example, note the prominence of the single red highlight in the gray-themed table, thanks to the lack of other color. Each row suffers slightly i

> In the above example, note the prominence of the single red highlight in the gray-themed table, thanks to the lack of other color. Each row suffers slightly in its horizontal scannability, but at the gain of increased table-wide scannability. Consider what is more important for your application. For what it's worth, I found the blue table easier to spot the red numbers. I'm red/green colorblind and I could not differentiate the red from the grey table coloring very well. With the blue it stood out.