I just got a pack of those stickers with my last tent that I bought lol. I used a small one on my viewing window flap. Reminds me of Mars Attacks!! I can't see covering my reflective walls with it tho. I will say the difference in lights was easy to tell after I got my HLG. But the mars tents are quality. Very thick canvas and the zippers work great. No light leaks and almost cat claw proof. All the poles have button slide locks. No plastic unions. I have a 3x3, 4x4, and a 5x5. I tried to get the 4x8 but its been back ordered for months. When shit slows down and they are in stock(with multiple emails to check) I will have to grab the 4x8 and use that as the veg tent instead of my 4x4. The 5x5 is still in the box and became my stock. I could see myself with 4-5 working tents if these bastards wont let me grow outdoors.