I love this. Most crypto price interfaces are super complex and this is a nice simple take on it! Please keep in-mind that my critiques/feature requests are because I actually really like this =)
Piggy-backing... Contrast as a whole needs some adjustment - keep in mind that people's light situations drastically will affect (effect? hell I don't know) how readable text on a background is. I have a window behind my most used monitor which sometimes causes issues with light text on light backgrounds, or dark text on dark backgrounds. There's also color blindness, age-related issues, and many other situations in-which you will want more contrast than what has been implemented here. This is very low-contrast, and I think it wouldn't detract from the "clean look" by swapping some of your white/off-white text out with black/near-black/navy equivalents, and I promise you it will make this software accessible to more folks!
I also would love to see a general "cryptotemp" solution that allows this same thing for different currency pairs. ex: "https://cryptotemp.com/ETH-USD"
