In about t-minus two hours, I'm heading to a store that sells nothing but coats in an effort to get one major winter purchase off my list. I understand there's a sale on, and I want to capitalize on this if possible.

I've combed Angie's archive for all her coat-buying tips and am so grateful to have found the entry on avoiding black coats!! Guide dogs are marvellous, but they shed like nobody's business, and since my dog is with me literally everywhere I go I'm sure a black option would be disastrous! So, I'm now seeking advice on which direction to go. I adore red and know it looks good on me, but suspect I'm too big at the moment to pull that off with the necessary panache. For maximum practicality, I'm thinking of grey, ideally with some kind of texture... But here's where I'd love some advice? What shade of grey is best? I'm leaning towards charcoal or slightly lighter, but want to know if that sounds ok. As for texture, what looks best here? Houndstooth? Herringbone? Tweed? I'm after something slimming and timeless.

Btw, is fuchsia still a trendy colour? I was thinking a fuschia scarf could look great with a dark grey coat. I imagine the grey could look good with the burgundy boots I hope to find, too.

EDIT: So the shopping trip wasn't quite a success, but not exactly a waste of time either. I think I know exactly what I want now after trying on coats that incorporate various elements of my perfect piece of outerware. I got the saleslady to take some pictures on my phone so I could show you what I'm thinking and get your opinion on a couple of things.

1. I'm not interested in the colour of this coat, and ideally I want one an inch or two longer. The tailoring feels about right, but I wonder about this high collar. It's the most prevalent style by far at the moment (though more selection will come in September). Should I avoid this kind of neckline?
http://s709.photobucket.com/al.....8;newest=1

2. I'm thinking maybe this colour will be the way to go. I like the v-neck on this one, too, but feel it's a bit unstructured everywhere else. What do you think of the charcoal shade?
http://s709.photobucket.com/al.....8;newest=1

3. Here's a tweed coat in the exact same style as no. 1 (still too short). The texture is interesting, but I wonder how it looks on me?
http://s709.photobucket.com/al.....8;newest=1

In case it matters, all of these were tried on over a dress and 3/4-sleeve jacket, hence the certainty that they're all too short. I'm pretty sure I want something truly knee length.