I know, I know I shamed blue but that doesn't mean that it's not my (second) favourite colour. (Well turquoise is my fav and that's basically blue so.) so I would totally go for an electric blue dip-dye in the summer.
Red T blonde ombre hairstyles- XYLA! This would look gorgeous! Take the blonde up a little, and fade it out! I could help you do it, maybe? Just get one of those ombre kits and use it with your red dye!