I installed Lazarus 4.0 RC1 and there are problems with the coloring of the code editor. Some options have changed (relative to what was previously set), and some do not work, i.e. despite the color set, they do not color the given editor element.
The ObjectPascal -> Modifier element was set to Bold even though I don't use bold style anywhere.
The second problem is that Gutter -> Gutter was previously set to black (RGB 10,10,10), but after installation it became gray (default system color) and even if I change its color to black, it is not applied (see attachment). Applying new colors does not change anything — gutter color is ignored.