Fashion-Related Question #1: What to Wear with... Sweet Guava?

I can never remember if papayas are fresh or bright at Jcrew but I'm pretty sure that guavas are sweet (I'm talking about the colors, of course).

So this is the first of a series of posts where I ask you to help me with a fashion-relate dilemma. In this case the dilemma is what to wear with a sweet guava top.
Some time ago I had the chance to come across a Harlow blouse in sweet guava in my size and for a decent price on the JCA Weekly Exchange. I already own the ivory version (see this post) and I regretted not getting also the sweet guava one (and/or the honey glaze one) because I absolutely LOVE this blouse, it's so feminine and classic and it will never go out of style (I can picture myself wearing this when I'm 80). So I got it and I was very excited about adding it to my closet.
However as much as I love the color per se, I find particularly challenging to find a cardigan to pair with it. I think that the blouse is mean to be worn alone in the first place but it's freezing here and I would like to wear it before spring, if not right now (it is REALLY freezing and there is nothing that could convince me to wear something different from a cashmere sweater these days).

Anyway, I have tried it with different cardigans that I already have and I'm not very happy, so I hope that you have some great ideas for me. While I was trying to find a cardigan to pair with it, I have realized that my winter color palette, and in particular my cardigans' color palette, is neutral bordering boring: besides a bright papaya cashmere V-neck cardigan from last year and the pinkish Michelle that I bought at the sample sale, everything is beige or black/charcoal or navy. There isn't a single splash of color, so I wouldn't mind taking advantage of the current great sale prices to buy a cardigan or two in a bright color.
But because maybe you don't remember the blouse, I wanted to show you a picture of it worn alone first. The jeans that I'm wearing in the pics are not the best style for this blouse but I was focused on the top half of my outfit, so please don't let the jeans distract you.



A similar style (plus the ruffly placket) from the current fall/winter collection, is the Solid Loulou blouse, that also comes in sweet guava, so if you have this one and you have found what to wear it with, I would like to hear it!

The first pairing that I have tried is the most obvious one, a black or navy cardigan. I picked up the navy Portland because it was longer than my black cardigans:



That's a safe choice (I think that nobody will point at me and say that I have a weird color taste if I go out wearing this); however I also think there is too much contrast between the sweet guava and a dark color like navy.
So I tried a heather grey, which on the opposite, is a little bit too fade for sweet guava (please mentally substitute this cardigan, which is old and too short, with something like the mohair souffle one):

I think that in the lighter palette a snow would work better, but snow is typically a color that washes me out (the last time that I have tried something in snow, the SA said that I could do better and said by a SA it sounds like a granitic truth).

Now for the unexpected pairings, I tried it with my cotton-cashmere waterfall cardigan in spice olive from this spring:



Unexpected it surely is, but is it also nice? I can't tell, what do you think?

And finally the following is the best I could come up with. You could call it an orgy of pastels but I kind of like them together, it's very delicate and it "respects" the spirit of the blouse. I'm talking of my croquet cardigan in amethyst from last spring. Did I tell you that I love this cardigan?



I think that this is how I'm going to wear it until I find another option. The bonus is that the cashmere in this cardigan is much thicker than any cashmere sweater that I have seen this fall/winter season (I'm still wondering why this cardi was part of the spring collection), so at least I'm going to be warm.
An option that I have been considering is buying a sweet guava cardigan for a total guava look. But because the bling cardigan (that comes in guava) I had put my hopes in is so flimsy, I am left with a cashmere crewneck and I don't know if I want to spend money in a cashmere in this color.

Do you have a blouse or cami in sweet guava? What do you pair it with? Do you have any color pairing suggestion? Which one of the options that I have showed you do you like the best?
Please share!