What are the prominent interior Home paint colors for 2018?

Seems like shades of grey are the most popular (inside & out) right now.

White with vanilla extract=biege stone

2018 Color Trends - Caliente AF-290 | Benjamin Moore

https://www.benjaminmoore.com/en-us/color-overview/color.../color-trends-2018

http://www.behr.com/consumer/inspiration/2018-color-trends?&gclid=EAIaIQobChMIrbmgh5DB1wIVEJJpCh2dZgD6EAAYASAAEgJ72PD_BwE

Medium grey & White, silver n white

Although I would not choose it, gray walls and turquoise accents are very popular now. You too have probably noticed that white cabinets are coming back in style. It seems wallpaper has also fallen out of favor. I have wallpaper in my DR, hallway, powder rm., master BR and main bathroom. Paper has been up for 15-20 yrs. and I still like it. Have changed accessories as they wear out but stick with what I like.

My philosophy is do what you like (within reason) and the heck with "what's in."

Look on Hometalk and Houzz websites for help with your question.