BetterDiscord: add Neptune theme

Configs/BetterDiscord/themes/Neptune.theme.css

@@ -0,0 +1,27 @@
+/**
+  * @name Neptune
+  * @author DevEvil#8745
+  * @version 2.0
+  * @description A dark, blue and customizable theme
+  * @authorId 468132563714703390
+  * @authorLink https://devevil.com
+  * @source https://github.com/DevEvil99/Neptune-Discord-Theme
+  * @website https://devevil.com
+  * @invite jsQ9UP7kCA
+*/
+
+@import url('https://devevil99.github.io/devevil/BetterDiscordAddons/Theme/Neptune/Neptune.theme.css');
+
+:root {
+  --neptune-main-bg: #1a2035;
+  --neptune-main-color: #228bd1;
+  --neptune-sec-color: #84adf8;
+  --neptune-home-icon: url(https://devevil.com/betterdiscord/neptune-home-icon.jpg);
+  --watermark-filter-invert: 0%;
+  --watermark-filter-sepia: 50%;
+  --watermark-filter-saturate: 3000%;
+  --watermark-filter-hue-rotate: 150deg;
+  --watermark-filter-brightness: 70%;
+  --watermark-filter-contrast: 200%;
+  --neptune-emoji-picker-color: 180deg;
+}