I would recommend you wear whatever makes you feel good, whatever brings a smile to your face and that you feel comfortable wearing.
Female Fashion Advice
Here we discuss anything related Fashion.
Very sorry to hear that your spouse died. My advice is to not worry about it. My guess is that you're not going to feel like cheery colors for a while, but if and when your do, you should wear them. You aren't obligated to dress according to anyone else's expectations. If there's anything that helps you heal or cope, you should wear that. Focus on being comfortable.
What's the weather like where you live? And are you looking for things you can continue to wear?
If it's cold there, it should be easy to find pullover sweaters and cotton knits with any style neck you like (including turtlenecks), just go for the more subdued colors.
If you're not planning for this to be a permanent style change but still want to wear these clothes later, you might consider something like blouse inserts or women's Dickey's, which can be worn underneath a top that you wish was more modest (perhaps even one you own now), and which you can simply stop wearing when you decide it's time.
And obviously, I'm sorry for your loss.
Sorry for our loss