Recently I discovered a glitch in Power BI Desktop where it won't let me change the color of data labels in my visual. Although I choose the white color, once I close the data label -> values tab it will turn back to grey. In desktop it will appear as white but if I upload it to power service the data labels will be shown as grey.
It's changed, but once I close the data label values tab it come back to grey. If I select the series individually they are actually selected to be shown as white, but if I select all series in the tab it will be shown as grey.