For me I'm torn between blue and grey, although I seem to have more grey things so I've gone with that. While not 100% accurate, the description isn't too far off!
For decades, my favorite color was always RED. Especially red cars.
But, more recently as acrylic paint companies have been able to develop more vibrant acrylic paint colors, my new favorite color is a vivid pink-red called Quinacridone Magenta. Look at this color, how can anyone not love this color! ALL those tones are within ONE brush stroke.