update:

v2---you can change the colors with the prompt:fill with XX|XX|XX,"XX" is the colors name.the trigger words is :line-art-style.lora strength setting between 0.7-1.10 is better.steps keep 20-25,CFG 7.0-7.5，the Sampler choose DDIM \LCM\DEIS\LMS will be take the perfect effects

do not limited the colors

limited the colors with the prompt:"fill with blue|green"

v1---using 32 pics,collected about still life\men\women\animal\outdoors landscape etc.

triiger word is :line-art-style,can made the subject be the low poly style.

total 25600 steps

you can change the colors with the prompt:fill with XX|XX|XX,"XX" is the colors name.the trigger words is :line-art-style.lora strength setting between 0.7-1.10 is better.steps keep 20-25,CFG 7.0-7.5