I grabbed the (imho) most interesting Flux styles definitions from https://enragedantelope.github.io/Styles-FluxDev/ and collected them in this wildcard. You can use them in Flux obviously, like:

An artistic image in the style of __flux_styles__, yadda yadda..

or even make it define your background:

A crazy scenery, (__flux_styles__ background:1.1)

They sometimes even work in non Flux models, so feel free to experiment :) I use it as an alternative to style LoRAs, and it works really well.

All showcase images above were prompted with this simple line:

An artistic image in the style of __flux_styles__. From this specific background emerges a {scary|creepy|analytical|cute|wholesome|interesting|romantic} scene.

Try to guess the styles ;)

Have fun!