This is the dark palette I use. Sharing it because people might want to see all the element names:

root=white,black border=black,lightgray window=lightgray,lightgray shadow=black,gray title=black,lightgray button=black,cyan actbutton=white,cyan compactbutton=black,lightgray checkbox=black,lightgray actcheckbox=lightgray,cyan entry=black,lightgray disentry=gray,lightgray label=black,lightgray listbox=black,lightgray actlistbox=black,cyan sellistbox=lightgray,black actsellistbox=lightgray,black textbox=black,lightgray acttextbox=black,cyan emptyscale=,gray fullscale=,cyan helpline=white,black roottext=lightgrey,black