diff --git a/src/signs_gui.cpp b/src/signs_gui.cpp
--- a/src/signs_gui.cpp
+++ b/src/signs_gui.cpp
@@ -357,29 +357,29 @@ HotkeyList SignListWindow::hotkeys("sign
 
 static const NWidgetPart _nested_sign_list_widgets[] = {
 	NWidget(NWID_HORIZONTAL),
-		NWidget(WWT_CLOSEBOX, COLOUR_GREY),
-		NWidget(WWT_CAPTION, COLOUR_GREY, WID_SIL_CAPTION), SetDataTip(STR_SIGN_LIST_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
-		NWidget(WWT_SHADEBOX, COLOUR_GREY),
-		NWidget(WWT_DEFSIZEBOX, COLOUR_GREY),
-		NWidget(WWT_STICKYBOX, COLOUR_GREY),
+		NWidget(WWT_CLOSEBOX, COLOUR_BROWN),
+		NWidget(WWT_CAPTION, COLOUR_BROWN, WID_SIL_CAPTION), SetDataTip(STR_SIGN_LIST_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
+		NWidget(WWT_SHADEBOX, COLOUR_BROWN),
+		NWidget(WWT_DEFSIZEBOX, COLOUR_BROWN),
+		NWidget(WWT_STICKYBOX, COLOUR_BROWN),
 	EndContainer(),
 	NWidget(NWID_HORIZONTAL),
 		NWidget(NWID_VERTICAL),
-			NWidget(WWT_PANEL, COLOUR_GREY, WID_SIL_LIST), SetMinimalSize(WD_FRAMETEXT_LEFT + 16 + 255 + WD_FRAMETEXT_RIGHT, 50),
+			NWidget(WWT_PANEL, COLOUR_BROWN, WID_SIL_LIST), SetMinimalSize(WD_FRAMETEXT_LEFT + 16 + 255 + WD_FRAMETEXT_RIGHT, 50),
 								SetResize(1, 10), SetFill(1, 0), SetScrollbar(WID_SIL_SCROLLBAR), EndContainer(),
 			NWidget(NWID_HORIZONTAL),
-				NWidget(WWT_PANEL, COLOUR_GREY), SetFill(1, 1),
-					NWidget(WWT_EDITBOX, COLOUR_GREY, WID_SIL_FILTER_TEXT), SetMinimalSize(80, 12), SetResize(1, 0), SetFill(1, 0), SetPadding(2, 2, 2, 2),
+				NWidget(WWT_PANEL, COLOUR_BROWN), SetFill(1, 1),
+					NWidget(WWT_EDITBOX, COLOUR_BROWN, WID_SIL_FILTER_TEXT), SetMinimalSize(80, 12), SetResize(1, 0), SetFill(1, 0), SetPadding(2, 2, 2, 2),
 							SetDataTip(STR_LIST_FILTER_OSKTITLE, STR_LIST_FILTER_TOOLTIP),
 				EndContainer(),
-				NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_SIL_FILTER_MATCH_CASE_BTN), SetDataTip(STR_SIGN_LIST_MATCH_CASE, STR_SIGN_LIST_MATCH_CASE_TOOLTIP),
+				NWidget(WWT_TEXTBTN, COLOUR_BROWN, WID_SIL_FILTER_MATCH_CASE_BTN), SetDataTip(STR_SIGN_LIST_MATCH_CASE, STR_SIGN_LIST_MATCH_CASE_TOOLTIP),
 			EndContainer(),
 		EndContainer(),
 		NWidget(NWID_VERTICAL),
 			NWidget(NWID_VERTICAL), SetFill(0, 1),
-				NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_SIL_SCROLLBAR),
+				NWidget(NWID_VSCROLLBAR, COLOUR_BROWN, WID_SIL_SCROLLBAR),
 			EndContainer(),
-			NWidget(WWT_RESIZEBOX, COLOUR_GREY),
+			NWidget(WWT_RESIZEBOX, COLOUR_BROWN),
 		EndContainer(),
 	EndContainer(),
 };