color editing

server/api/middlewares/validation.js

@@ -1,6 +1,7 @@
 // @flow
 import apiError from '../../errors';
 import validator from 'validator';
+import { validateColorHex } from '../../../shared/utils/color';
 
 export default function validation() {
   return function validationMiddleware(ctx: Object, next: Function) {
@@ -28,6 +29,12 @@ export default function validation() {
       }
     };
 
+    ctx.assertHexColor = (value, message) => {
+      if (!validateColorHex(value)) {
+        throw apiError(400, 'validation_error', message);
+      }
+    };
+
     return next();
   };
 }