fix logout and color

app/assets/stylesheets/application.css

@@ -16,7 +16,7 @@
  */
 
  .sample-submitted {
-   background-color: #e2f7e7;
+   background-color: #feffea;
  }
 
  .sample-in_preparation {
@@ -24,5 +24,5 @@
  }
 
  .sample-measured {
-   background-color: #feffea;
+   background-color: #e2f7e7;
  }

config/routes.rb

@@ -20,7 +20,7 @@ Rails.application.routes.draw do
   post '/signup',  to: 'users#create'
   get   '/login',  to: 'sessions#new'
   post  '/login',  to: 'sessions#create'
-  delete '/logout',to: 'sessions#destroy'
+  get '/logout', to: 'sessions#destroy'
 
   resources :users
   resources :operators, controller: 'users', type: 'Operator'