Revert "Make borders blue"

This reverts commit acd4ed3.

Author: VolodymyrVorona

Diff for: lua/darkplus/palette.lua

@@ -18,7 +18,7 @@ local colors = {
 	light_gray = "#808080",
 	dark_gray = "#6e7681",
 	-- border = "#2d2d2d",
-	border = "#0078d4",
+	border = "#c8c8c8",
 	visual = "#264f78",
 	select = "#03395e",
 	match_bg = "#194765",