Implement semantic theme color system

themes/ethereal/colors.toml

@@ -1,3 +1,5 @@
+mode = "dark"
+
 accent = "#7d82d9"
 cursor = "#ffcead"
 foreground = "#ffcead"
@@ -5,19 +7,28 @@ background = "#060B1E"
 selection_foreground = "#060B1E"
 selection_background = "#ffcead"
 
-color0 = "#3C486D"
-color1 = "#ED5B5A"
-color2 = "#92a593"
-color3 = "#E9BB4F"
-color4 = "#7d82d9"
-color5 = "#c89dc1"
-color6 = "#a3bfd1"
-color7 = "#F99957"
-color8 = "#6d7db6"
-color9 = "#faaaa9"
-color10 = "#c4cfc4"
-color11 = "#f7dc9c"
-color12 = "#c2c4f0"
-color13 = "#ead7e7"
-color14 = "#dfeaf0"
-color15 = "#ffcead"
+bg = "#060B1E"
+lighter_bg = "#131a3a"
+selection = "#252e56"
+muted = "#3d4573"
+dark_fg = "#6d7db6"
+fg = "#9a96a8"
+light_fg = "#c9b8a6"
+bright_fg = "#ffcead"
+
+red = "#ED5B5A"
+yellow = "#E9BB4F"
+orange = "#eb8b54"
+green = "#92a593"
+cyan = "#a3bfd1"
+blue = "#7d82d9"
+purple = "#c89dc1"
+brown = "#75452a"
+dark_bg = "#040816"
+darker_bg = "#030610"
+bright_red = "#faaaa9"
+bright_yellow = "#f7dc9c"
+bright_green = "#c4cfc4"
+bright_cyan = "#dfeaf0"
+bright_blue = "#c2c4f0"
+bright_purple = "#ead7e7"