Hi, The menu item is back, and the dialog works, but you still need to resize it every time you switch between the categories inside it. Otherwise it will show empty space instead of colors or emblems. That's why I didn't close the upstream report yet.
That's what the original reporter here said: > When I tried the usual procedure (Edit-Backgrounds and Emblems-Colors), it > appears as there are no colors at all! The box is completely empty. This is > very bad for my eye-sight and please be so kind to fix this problem. So it's not completely fixed, and not everyone knows about the workaround with resizing. But it's up to you to have it closed or not :)

