Which IPhone color should I get?

So, I ordered a Gold IPhone 7+ around three months ago, and back when they were released I ordered the same version of phone but in Rose Gold. I didn't like either colors at all, but loved the phone. For now until the 8 comes out, what color should I choose?

Best fitness tracker?

While at a concert, recently, I was sprayed with water. Long story short, water got into my Fitbit and the touch screen functions no longer work. On top of that, the straps on my Fitbit have been broken for a while.

Instead of trying to fix my Fitbit, I wanted to get a new one but my dad doesn't think that it's worth it.

I do not have an iPhone so I can't get an Apple watch.

Are there any fitness tracker watches, besides those in the Fitbit brand, that anyone would recommend?

Why my photos can't load on my iphone?

I have a iphone 5s. When click into "photos"some of photos turn into white and an exclaimation point shows at the right bottom of the photos, when i tapped on those photo, it says "error loading the photos". What should i do?

How can I record video/take pics on my iPhone without taking up too much memory?

I'm going to a concert on Monday night and I like to record little live snippets here and there (don't worry- it's allowed) -- but in the past, my memory on my iPhone gets used up WAY too quick.

Is there a way to save the videos/pics to my iCloud instead of on my phone? If so-- can you guide me how to?
Otherwise, is there an app that lets you do this?

Can I track my iPhone if my location is on, but I do not have find my iPhone?

I lost my iPhone 2 days ago and thought It was in my house, however I have searched everywhere and can't find it. Would I be able to track my phone by using location services or something? It is not registered to find my iPhone, but I was wondering if I could go to the vodaphone shop or apple shop and ask them to track it through location services?