This is a collection of fun links and cool sites that can help you if you want to do cool code things. Let me know if there's anything you want me to add!
Color-Hex: a site which allows you to get the hex values, rgba values, and any shades/tints/related colours for any given colour.
Image Color Picker: allows you to get a colour palette from an image, the hex colour of part of an image, and has a second tab that allows you to get the hex value and related colours of any given colour.
Google Fonts: a collection of fonts which work with RPF that you can use in your posts.
CSSGradient.io: a nice and easy way to create gradients.
HTML-CSS-JS Generators: a collection of code generators for things like text-shadow, box-shadow, and transform.