What do they use for the iPhone glass paint?

I attached a photo below. I want to buy some of whatever makes that mirror Gold. Is it paint or what is it? Do you know what this thing is called. Not the case. The paint or whatever. The mirror gold.

I need to paint glass in that color. What do they use for the iPhone glass paint

Will my iphone backup everything i have?

Example. If i had stuff downloaded on my phone and photos/music wallpaper will they come back again if i back up my phone? Like if i reset my phone and then restore everything, everything will look like the way it is? (with everything in it)

Please answer.

Added (1). Oh yeah, my phone is an iphone 6s

Need to decide on an iPhone that meets specific needs. Any suggestions?

I'm underage and living with my parents who don't want me getting a phone with a contract. I work and pay for all my belongings, so I'm trying to buy an unlocked iPhone. I was thinking I could get one, then buy prepaid minutes from those cards at stores as needed. Will this work? And where would I buy an iPhone like the one I need? It can be iPhone 5, 5s, 5c, 6, or 6 plus. (It needs to be an iPhone to support the apps I use)

I cracked my iPhone 6s and don't know where I should take it?

I cracked my iPhone 6a and i'm really upset and do you think that I should take it in to Apple? Or do you think that I should take it to a place that just gets repairs… I'm worried that if I just go to a place that they will damage it more. What do you guys think?

Can I forward phone calls on an iPhone without access to the phone i would like to forward from?

So I moved to Mexico recently and the phone I got here got water damage and instead of getting a new phone I switched back to my US phone but since the sim is from the US I can't put my Mexican phone number and the sim from my Mexican phone got water damage and I'm in a situation where I can't get a New Mexican sim. So I was wondering if there was a way I could receive the phone calls from my Mexican number without access to the phone I would like to forward the calls from?

Accidentally deleted my LTE service and need it back?

I have an Iphone 5 and my company is h20 wireless and i pay $40 for service and i was trying to get rid of the adblock thing. So i went to settings>general> profiles. And instead of deleting adblock, i deleted my LTE service. What can i do to get it back. Should i call my company or what?