Relive the 60's with this trippy, psychedelic colour texture node for Blender Cycles and Eevee. This node would be useful as a tie dye shader or just simulating a psychedelic hallucination.  

This node is animatable with time and has various settings to adjust the pattern to your particular style.

This product includes a .blend file with the psychedelic colour texture node which can be connected to the color input of a shader node such as emission.