I have two black trench coats, and I got tired of the black...ended up buying a magenta-ish spring trench at Marshalls on a whim while on vacation last month.
I love the colour! The weird thing is that I am still wearing dark jeans and maybe a dark sweater, plus dark coloured booties...and the magenta/orchid-like trench is *amazing*.
Let me go and look up the Jolt jacket, as I'm not familiar with it. Meanwhile, I don't think there's anything wrong with a black trench in the spring
ETA: I looked up the red Jolt jacket on the Nordstrom site, and while I love the colour and style of it, if I had to choose between a coloured trench and a coloured denim jacket, I would personally go for the coloured trench. I only say this because I am not convinced I'd get as much use out of a red denim jacket compared to a vibrant, coloured trench coat. A trench coat can be dressed up or down, and can be worn in more situations, whereas the denim jacket in the red colour seems more casual to me. I also think I would have a harder time coming up with outfits to wear with the red denim, whereas with a trench, I can just throw it on over top of whatever I'm wearing (for the most part) and it doesn't have to "go" with the rest of my outift as much as a short coloured denim jacket might. Just my own rationalization here about what I would choose. That said - I really like that red denim jacket too, it's just that I'd go for the coloured trench if it came down to a choice between the two.