In all honesty, it's disgustingly boring. The first thing the player will see is a perfect grey box, with 0 detail. I can't even say the furniture in the spawn is bad because you don't even have that, make a table or something if you're going to bother with a spawn room!
Second thing they see is the rainbow spawns. Why. What is the point of that? I feel like I'm looking at a duplo blox set.
Thirdly, your brick controls are really boring. You use two bricks and that's it. No computer screen, no FX, nothing to catch the eye.
Short and sweet: it's painfully boring and your attempt to liven it by coloring the spawns makes it look worse
