We can’t see your code as it was too long to be ported over automatically when the post was created.
You can post your code by using the Preformatted Text tool (</> icon or CTRL+e), which will create two sets of triple backticks. Pasting your code between these will ensure that it displays correctly on the forum.
Ok, there’s just a couple of tweaks and your code will pass.
Firstly, the first colour you should be using is building-color4 (not building-color).
Secondly, transparent isn’t a variable, so shouldn’t be using the var keyword or the parentheses.