I use Alfred all the time, have done for years.
I also have a plain grey desktop background, mostly grey windows, a grey-on-grey theme in BBEdit. There’s a lot of grey.
And, as I stumble further into middle-age, my eyesight is getting worse.
So I made an Alfred theme that’s big and bright and stands out well on top of all the grey.
☞ Download the theme here (zip file)