Looks like you have duplicate posts.

Yes, lose the pillows that came with your sectional & replace with colors that you love ( you have LOTS of gray in there already).

It needs color the couch looks very plain. You need some throw pillows that will add a pop of color to your living room. I would recommend some lavender grey pillows or some taupe or maybe some very light grey colors for throw pillows.

I think your coffee table is a little formal for the sectional. However, if you were prepared to paint it with milkpaint it would make it more casual. Love you sectional, looks so comfy.

Pull it back some more going to get neck strain it is so close to TV. Make sure pillows are soft for neck resting. Maybe no coffee table, use c-tables so the kids and bring them close to sofa for snacks or writing, etc

Yes. We just had it delivered 2 hour ago and I know there is a lot of gray. I do love gray, but need some color to break it up. Thanks for all your comments.

Is that a wood fence visible through the windows? Hard to see in photo. Do you have gray drapes? What are your favorite colors so that Houzz can help?

I agree with the others that some pops of colors from pillows would help. If you're not too attached to the rug I would recommend replacing it with a lighter color because it blends in too much with the sofa. A rectangle shaped table would also be a better fit for the sofa. Good luck!

Yes it is a fence the you see though the window. Our plan is to add some wall planters or something. We are open to any changes except sofa since we just got it today.
This is the view from sectional. Lots of gray so looking to bring everything together.

Favorite colors are blues. Would love to add some blues into the mix.

Get a trio of storage ottomans in colors, where the boys can stash their toys, then maybe some print curtains in the ottoman colors.

More curtains:

Ok I bought some pillows.... tried to get away from gray but not feeling super bright for colors.

Nice pillows. There's really not much for commentors to add since you're already going in the direction you want--all gray. You've got a tasteful living room. Enjoy it. You're done! Down the road, if you decide you want a teeny bit of color, the many suggestions of turquoise, yellow, and orange are classic accent colors for gray. Over and out!