Backround color 3 is not a valid member of Text BUTTON?

I have a frame for my fighting game and I made a frame with all buttons and I try to change their color at once at it fails. ~~~~~~~~~~~~~~~~~ local dude = script.Parent.Parent.Parent.Combat:GetChildren()

for i, dude in pairs(dude) do
	dude.BackroundColor3 = hsv
end

is my code. I dont understand why Backround Color 3 is not a valid member

Instead of writing a script that changes all text button background colors at once just use "UIGradient"s. "UIGradient"s are a great way to change color.