Extract all colors to external ash.css using Ash palette variables

ash.css

@@ -0,0 +1,25 @@
+/* Ash palette - all colors used in the application come from this file */
+:root {
+    /* Base surfaces */
+    --ash-void: #100f12;
+    --ash-panel: #1c1b1f;
+    --ash-raised: #29282c;
+    --ash-border: #3a383d;
+    --ash-mid: #54514f;
+    --ash-ash: #6d6a63;
+    --ash-stone: #999187;
+    --ash-icon: #b0a89a;
+    --ash-bone: #e6dfd1;
+    --ash-chalk: #f3ede1;
+
+    /* Accent colors */
+    --ash-ember: #e0914f;
+    --ash-gold: #d6b46a;
+    --ash-blood: #c15c46;
+    --ash-rust: #a86a48;
+    --ash-rot: #b47e99;
+    --ash-moss: #8f9a5c;
+    --ash-steel: #7c9aa1;
+    --ash-steel-light: #a3bcc1;
+    --ash-violet: #a585ac;
+}