My hair is now what I would call strawberry blonde, and since you seem pale like me (do you have freckles? even better haha), I think it would look natural on you...it looks pretty natural on me even though it SO isn't lol. Reddish hair, in my opinion, looks very nice with a complexion like yours.
Personally, I don't know much about temporary hair color, everything I've done has been permanent, yet my hair's still pretty ok. It might be because I use a very moisture-enriching product when I do dye it. If Garnier has temporary hair color, I really recommend the brand--it smells lovely and makes my hair sooo soft and shiny!!!