add zenburned flavor

lua/zenburned/palette.lua

@@ -0,0 +1,13 @@
+local util = require "zenbones.util"
+local lush = require "lush"
+local hsluv = lush.hsluv
+
+local M = {}
+
+M.dark = util.palette_extend {
+	bg = hsluv "#3f3f3f",
+	fg = hsluv("#efdcbc").de(14).li(20),
+	rose = hsluv "#e37170",
+}
+
+return M