fmp17 Fill color fails in Browse mode

[ch53]

Hello,

I've come upon a strange phenomenon, and wonder what could have gone wrong: In layout mode, I select gray solid coloring for a couple of fields and their labels, but in Browse mode (both list and table views), the colors fail to show in some instances. Only in form view, everything is displayed as expected. Neither restarting FM nor the PC (win10) helped. I assume that the solution is simple, but somehow I can't come up with it, therefore: Many thanks in advance for helpful comments!