Menu background has same color as panels and is not readable

[mentallurg]

On Linux Mint I use default system colors, no changes.
Menu items in Umongo have light white background, near to white. Panels have white background. When menu is displayed over panel, text is mixed and is hard to read. Umongo is the only application that doesn't use system colors and that has so badly readable menu.
Could you change it to the default system colors? This will guarantee that menus in Umongo will always be readable, because developers of the color scheme care of this.

Not a locker. But makes navigation through menu very slow, because it costs time to distinguish menu text from the text in the background panel.

[mentallurg]

Same about context menu. It is very hard to distinguish menu text from from the panel text.

[mentallurg]

There is check box "Use Native Look". But it makes no difference. After switching it and restarting there are no changes. Checked a couple of times.