I've not noticed alerts at the bottom. I was away for a week or two, so maybe I missed something, but they seem to be where I always expected them to be.
As for photo colours, first question: what device are you looking at them on? Because if it's "on the phone's screen" and these are 2 different phones then it's hard to know whether the difference is the camera, the display or both.
But if you are looking at the photos on the same device, and its one whose colour rendering you trust, then yeah, different cameras may produce different colours. I could write you an essay on why, but it comes down to the fact that there is a lot of processing involved in translating amounts of charge produced behind different coloured filters (what the camera sensor actually measures) into a colour image, and that means a lot of decisions. And different manufacturers will make different choices, so if you photograph the same scene with 2 different phones at the same time the colour balances of the images will differ. In fact they probably don't aim for accuracy anyway: they want to sell phones, so if they think that most of their customers will prefer images that have a bit more saturation, a bit more contrast, be a bit warmer, a bit more vivid, than the real scene actually was, that's what they'll aim to do. But the net result is that 2 different phones will tend to produce different-looking images.
So what can you do about it? If your camera has a "raw" mode you can use that, copy the raw files (much bigger than the jpegs) to a computer and use software to produce jpeg images from them. That way you will have a lot more control over those choices, but it's a lot, lot more work! I do it with my "real" cameras, but not with my phones. So practically, if your camera app has a "pro" or "manual" mode, as
@ocnbrze suggests you can see whether that helps. If it's the colour balance then look for a "white balance" (WB) or "colour temperature" option (these are the same thing). That will shift the overall colour balance of the image from reddish ("warm") to blueish ("cold"), which may be enough. On my s21's camera that's really the only colour control I have: exposure compensation ("EV") alters the brightness, which may be perceived as a change in colour in places, but that's about it. If the manufacturer has for example decided that both blues and reds should be over-saturated then white balance can't fix both, since turning one down will turn the other up.
One other thing you could check though: does your camera app have "filters"? On my Samsung this appears as a little "magic wand" icon in one corner of the camera, but others may use a different symbol or way of selecting. If it has such things, they can change the colour balance of the image. So if the colours look wrong, maybe check you don't have one of those applied. And if you don't, maybe see whether there is one that makes things look more realistic?
One other thing to remember: different types of lighting can also produce different colour casts, so what works in daylight might not work as well in artificial light indoors. The camera will try to figure out the correct white balance, but won't always get it right.