I downloaded the icons I needed from here. They are from no particular icon pack. I just selected the icons which I felt would fit in well with the theme I was going for and then edited them onto the wallpaper background images on my computer. It’s a tedious process but it becomes easy once you get used to it and the result is worth it ;). Source: over 2 years ago

Icons 8 (Free but sometimes they charge for full Res). Source: almost 3 years ago

Https://icons8.com/icons/ios You can use them by putting this link "https://img.icons8.com/ios/250/000000/icon.png" and just replace the word icon with the name of the icon (with spaces with replaced by a dash). Source: about 3 years ago

Https://webgradients.com here's a website with super nice gradients and it seems just looking at some of them you can already have a vibe from them. You could just color pick them and use for certain levels. Source: over 1 year ago

Totally agree, maybe use softer gradients like those in https://webgradients.com. Source: over 2 years ago

Or just get free gradients here, the creators of that site even did more artistic effort than this NFT had, LOL. Https://webgradients.com/. Source: almost 3 years ago

Pick 2 colors and generate more color palettes 24) (Webgradients)[https://webgradients.com/]. - Source: dev.to / about 3 years ago