Wordpress Tweaks

Hello,

We need some fixes for wordpress
1- When client add more than 1 from the same item in the cart, a notification will appear to make sure the client need more than 1 from the product
2-Prices are showing in black, and sale price is showing in black also, we need the sale price to show in red
3-We have 2 type of shipping: standard and express, when someone choose express shipping, in woocommerce orders we need all orders with express shipping to show in red so we can notice them quickly and we need to show express shipping in the invoice header

Thanks