I am trying to take brick (a) and touch it to brick (b) and brick (b) take the color of brick (a) when they touch.
local parts = workspace:FindPartsInRegion3(FillArea)
for _, part in pairs(parts) do
if part.Parent.Name == "NotUsedBlock" then
model:GetChildren("Build") do
model.Build.BrickColor.new = part.BrickColor
end

2 comments
use :GetTouchingParts()
I have question; How does region3 works. i get the fact that its a 3d area but what arguments does region3.new() take and what does each argument mean