fix(ui): add blue theme color

tailwind.config.js

@@ -16,6 +16,7 @@ module.exports = {
       white: colors.white,
       gray: colors.trueGray,
       green: colors.green,
+      blue: colors.blue,
       indigo: {
         50: '#f0f9ff',
         100: '#e0f2fe',