Make bg-shape colors configurable

app/images/bg-shape.svg

@@ -1 +0,0 @@
-<svg width="1754" height="1336" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><filter x="-18.1%" y="-15.3%" width="136.3%" height="130.7%" filterUnits="objectBoundingBox" id="c"><feGaussianBlur stdDeviation="50" in="SourceGraphic"/></filter><filter x="-16.5%" y="-11.7%" width="133%" height="123.3%" filterUnits="objectBoundingBox" id="d"><feGaussianBlur stdDeviation="50" in="SourceGraphic"/></filter><path id="a" d="M0 0h1754v1336H0z"/></defs><g fill="none" fill-rule="evenodd"><mask id="b" fill="#fff"><use xlink:href="#a"/></mask><g mask="url(#b)"><path d="M1257.79 335.852C1262 527.117 897.55 530.28 792.32 977.19 600.48 981.41 435.29 545.31 431.08 354.046 426.871 162.782 578.976 4.31 770.815.088c191.844-4.222 482.764 144.5 486.974 335.764Z" fill="#E7F5FF" fill-rule="nonzero" filter="url(#c)" transform="translate(309.54 -367.538)"/><path d="M71.127 1126.654c206.164 179.412 502.452 211.232 661.777 71.072 159.325-140.163 295.165-510.155 8.23-504.412-320.079 6.405-381.35-817.422-540.675-677.258-31 368-335.497 931.182-129.332 1110.598Z" fill="#5448EE" fill-rule="nonzero" filter="url(#d)" transform="translate(309.54 -141.056)" opacity=".1"/></g></g></svg>

app/soapbox/utils/theme.ts

@@ -97,6 +97,19 @@ const legacyColorsToTailwind = (brandColor: string, accentColor: string): Tailwi
   return {
     primary: tintify(brandColor),
     accent: tintify(accentColor ? accentColor : generateAccent(brandColor)),
+    gray: {
+      50: '#f9fafb',
+      100: '#f3f4f6',
+      200: '#e5e7eb',
+      300: '#d1d5db',
+      400: '#9ca3af',
+      500: '#6b7280',
+      600: '#4b5563',
+      700: '#374151',
+      800: '#1f2937',
+      900: '#111827',
+    },
+    'sea-blue': '#2feecc',
   };
 };