Rainbow Shenanigans
This client-side Fabric mod introduces several interesting color-related changes to Minecraft:
In creative mode, all colored blocks and items (such as wool and dyes) are automatically sorted by color scheme, making it much easier to find the materials you need.
Sheep named "jeb_" now cycle through rainbow colors in a smoother and more beautiful sequence, creating a genuine rainbow effect.
The mod also changes the color palette of the standard "Colormatic" loading screen, making it brighter and more diverse.
Each of these features can be individually configured through the settings menu accessible via Mod Menu. Please note that some settings use dye color names (with underscores instead of spaces), while others work with formatting codes.
Comparison before and after installing the mod:

Requires Cloth Config version 4.9 or higher to function.