Build out an audio player card in preperation for audio datasets and samples.

ui/tailwind.config.ts

@@ -22,6 +22,20 @@ const config: Config = {
           200: '#e5e5e5',
           100: '#f5f5f5',
         },
+
+        yellow: {
+          950: '#1a1203',
+          900: '#2a1c05',
+          800: '#3a2607',
+          700: '#5a3a0b',
+          600: '#7a4e0f',
+          500: '#f59e0b', // deeper than base; good for hover on dark
+          400: '#fbbf24', // your base
+          300: '#fcd34d',
+          200: '#fde68a',
+          100: '#fef3c7',
+          50: '#fffbeb',
+        },
       },
     },
   },