Plasma6 styles / themes / "breeze light" - I need to change the colors

For the life of me I cannot find where to change the colors of the application launcher. Some themes change it though. On plasma5 the "openSUSE" theme had a very plain looking app launcher (I dig it), with very recent plasma6 the frame (with search box, shutdown ... ) is a light grey, fine, and the inside box with all the application icons is a very ugly greenish gray - I must change it - but where? Window decorations and so forth are fine, it's just the application launcher that badky hurts my eyes. I've tried messing with "/usr/share/plasma/desktopthemes/breeze-light/colors" and got all sorts of ugly colors, but the grey background always stayed :-( Some help please Robert