diff --git a/readme.md b/readme.md
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@@ -47,6 +47,7 @@ List of platforms where projects can be dropped
 - [p5.js-svg](https://github.com/zenozeng/p5.js-svg) - SVG runtime for p5.js.
 - [Paper.js](http://paperjs.org/) - Specialliced in Vector Graphics Scripting.
 - [Processing](https://processing.org/) - Write generative art in Java or Python and create applications in any OS included Android.
+- [Spectral.js](https://github.com/rvanwijnen/spectral.js) - JavaScript library designed to deliver realistic color mixing.
 - [thi.ng](http://thi.ng/) - Open source collection of computational design tools for JavaScript, TypeScript, Clojure and ClojureScript languages.
 - [three.js](https://threejs.org/) - JavaScript 3D library.
 - [T5.js](https://github.com/Tezumie/T5.js/tree/main) - Lightweight and simplified 2D graphics library designed for drawing to the canvas.
@@ -61,15 +62,17 @@ List of platforms where projects can be dropped
 - [Steve's Makerspace](https://www.youtube.com/c/StevesMakerspace) - Beginner and intermediate tutorials introducing fundamental algorithms for creative coding.
 - [PRNG distributions](https://piterpasma.nl/articles/probability) - Interesting basic PRNG distributions.
 - [SDFs by Inigo Quilez](https://iquilezles.org/) - All you need to know about SDFs and other shader magic.
+- [How to make generative art feel natural](https://www.generativehut.com/post/how-to-make-generative-art-feel-natural) - Language agnostic techniques to elevate the natural look & feel of generative art (by Ben Kovach).
 - [How to make your first generative art with P5.js by shvembldr](https://medium.com/@shvembldr/how-to-make-your-first-generative-art-with-p5-js-3f10afc07de2) - A good starting point from a respected gen artist.
 - [Why Love Gen Art? by Artnome](https://www.artnome.com/news/2018/8/8/why-love-generative-art) - A very well written overview of what gen art is and where it came from. 
 - [Offscreen Canvas](https://offscreencanvas.com/) - Issues and courses about WEBGL.
 
 ## Tools
 
+- [Coolors](https://coolors.co/) - Color palette generator (free and pro versions).
 - [Desmos](https://www.desmos.com/calculator) - Online graphing calculator.
-- [Graphtoy](https://graphtoy.com/) - Great way to easily play with lineal formulas.
 - [Easing Functions](https://easings.net/#) - Easy way to get easing math functions.
+- [Graphtoy](https://graphtoy.com/) - Great way to easily play with lineal formulas.
 - [Openprocessing](https://openprocessing.org/) - Simple online tool for creating P5.js sketches.
 - [Shadertoy](https://www.shadertoy.com/) - Advanced tool for creating shaders.
 - [Turtletoy](https://turtletoy.net/) - Create generative plotter art using a minimalistic JavaScript Turtle graphics API.