Hexadecimal Color Blender - Awesome!
Gimp https://cryptii.com/ https://www.windows93.net/ https://www.mf2fm.com/rv/ https://www.freecodecamp.org/learn/2022/responsive-web-design/ https://sadgrl.online/projects/layout-builder/ https://zonelets.net/ https://cssgradient.io/Listen to Wikipedia "Bells indicate additions and string plucks indicate subtractions. Pitch changes according to the size of the edit; the larger the edit, the deeper the note." A surprisingly lovely soundscape.
myNoise "Discover a world of immersive and customizable soundscapes that can enhance focus, relaxation, and sleep."
Sounds of the Forest "We are collecting the sounds of woodlands and forests from all around the world, creating a growing soundmap bringing together aural tones and textures from the world’s woodlands." Open source.
Drive and Listen Videos of driving through streets around the world, with local radio stations.
Radiooooo Music by decades and countries. (Lots of great obscure tunes in the US 1970s category.)
Here's how you can make bold and italic text.