It would be great if you could make the colors in the XF views customizable e.g. by adding fields with the HTML color codes for each status background, foreground and test failures color.
In our team we prefer to use green over blue/violet for successful builds.
Variant 1: Full color customization would provide the most flexibility
Variant 2: Alternatively we would be happy with a simple flag to choose betwenn red/yellow/green and red/yellow/blue style.
Variant 3: Alternative number two would be, that you check for the "Green Balls" plugin being activated and then just use green for successful builds accordingly.