Implement semantic theme color system

themes/kanagawa/colors.toml

@@ -1,3 +1,5 @@
+mode = "dark"
+
 accent = "#dcd7ba"
 cursor = "#c8c093"
 foreground = "#dcd7ba"
@@ -5,19 +7,28 @@ background = "#1f1f28"
 selection_foreground = "#c8c093"
 selection_background = "#2d4f67"
 
-color0 = "#090618"
-color1 = "#c34043"
-color2 = "#76946a"
-color3 = "#c0a36e"
-color4 = "#7e9cd8"
-color5 = "#957fb8"
-color6 = "#6a9589"
-color7 = "#c8c093"
-color8 = "#727169"
-color9 = "#e82424"
-color10 = "#98bb6c"
-color11 = "#e6c384"
-color12 = "#7fb4ca"
-color13 = "#938aa9"
-color14 = "#7aa89f"
-color15 = "#dcd7ba"
+bg = "#1f1f28"
+lighter_bg = "#223249"
+selection = "#363646"
+muted = "#54546D"
+dark_fg = "#727169"
+fg = "#938aa9"
+light_fg = "#c8c093"
+bright_fg = "#dcd7ba"
+
+red = "#c34043"
+yellow = "#c0a36e"
+orange = "#c17158"
+green = "#76946a"
+cyan = "#6a9589"
+blue = "#7e9cd8"
+purple = "#957fb8"
+brown = "#60382c"
+dark_bg = "#17171e"
+darker_bg = "#111116"
+bright_red = "#e82424"
+bright_yellow = "#e6c384"
+bright_green = "#98bb6c"
+bright_cyan = "#7aa89f"
+bright_blue = "#7fb4ca"
+bright_purple = "#938aa9"