How do i use for loops for changing brick color?

If the parameters in the table are BrickColor values, then that script should work fine! Be sure you defined the variable 'table' as well as 'part'! The for loop is used when you want to go through multiple objects/multiple parameters in a table. Say if you wanted a bunch of parts to become that brick color:

table = {"Really red", "Really blue"}

while wait(120) do
    for i,v in pairs(script.Parent:GetChildren()) do
        if v:IsA("Part") then
            v.BrickColor == BrickColor.new(table[math.random(#table)])
        end
    end
end

The above script goes through every child that's a member of the script's parent, checks if it's a part, then changes all of their BrickColors! Your script was a bit confusing, so if you have any questions, be sure to comment!