Add scss colors into rust via build-script, flesh out math evaluation in launcher, Restructure some code

style/_colors.scss

@@ -0,0 +1,26 @@
+// Changing colors here will not apply to the constants in theme.rs until the app is recompiled
+$background: #232320;
+$background1: #3c3836;
+
+$foreground: #ebdbb2;
+
+$orange: #d65d0e;
+$lightorange: #d77331;
+$green: #98971a;
+$lightgreen: #b8bb26;
+$yellow: #d79921;
+$lightyellow: #fabd2d;
+$red: #cc241d;
+$lightred: #fb4934;
+$blue: #0db7ed;
+$lightblue: #83a598;
+$magenta: #b16286;
+$lightmagenta: #d3869b;
+$cyan: #689d6a;
+$lightcyan: #8ec07c;
+$gray: #928374;
+$lightgray: #a89984;
+
+$warning: $yellow;
+$error: $red;
+$urgent: $red;