In short,

FaceBomb : Covers from anime to 2.5D style. Suited for general use.
- recipe : 0.5((0.5(AbyssOrangeMix2_hard) + 0.5(pastelmix-better-vae-fp32)) + 0.5(CounterfeitV25_25)) + 0.5(dalcefoV3Painting_dalcefoV3Painting)
ColorBomb : FaceBomb + vivid color and lighting. A bit picky about prompts.
- recipe : dalcefoV3Painting_dalcefoV3Painting + 0.5(ultracolorV4_ultracolorV4 - CounterfeitV25_25)
HyperBomb : Strong anime style w/ highly saturated color.
- recipe : 0.5((0.5(AbyssOrangeMix2_hard) + 0.5(pastelmix-better-vae-fp32)) + 0.5(CounterfeitV25_25)) + 0.5(dalcefoV3Painting_dalcefoV3Painting) + 0.3(0.8(pastelMixStylizedAnime_pastelMixPrunedFP16) + 0.2(CounterfeitV25_25) - f222)

Recommended Setting

VAE

If the color appears dull or washed out, try applying VAE. I used kl-f8-anime2
https://huggingface.co/hakurei/waifu-diffusion-v1-4/blob/main/vae/kl-f8-anime2.ckpt

Sampling method and Hires.fix

DPM++ SDE Karras: 24~32 steps / R-ESRGAN 4x+ Anime6B: 2x, 14 steps / Denoising strength:0.45 ~ 0.55
DDIM: 24~32 steps / Latent: 2x 14 steps / Denoising Strength:0.45 ~ 0.7

First option yields better result in general. Recommended.
Second option was 1.5 ~ 2 times faster on my system but the output was questionable. Especially for ColorBomb.

FaceBomb

Positive : (masterpiece, sidelighting, finely detailed beautiful eyes: 1.2), masterpiece*portrait, realistic, 3d face, lustrous skin,
Negative : (worst quality, low quality:1.4), watermark, logo,

ColorBomb

Positive : (masterpiece, sidelighting, finely detailed beautiful eyes: 1.2), (ultra-detailed, high-resolution: 1.2), beautiful girl, { color } { color } theme,
- e.g. black gold theme
Negative : (worst quality, low quality:1.4), watermark, logo,

HyperBomb

Positive : (masterpiece, sidelighting, finely detailed beautiful eyes: 1.2),
Negative : (worst quality, low quality:1.4), watermark, logo,

Example

More pictures in folder.
Below are the ideal/intended outputs.

FaceBomb

(masterpiece, sidelighting, finely detailed beautiful eyes: 1.2), masterpiece*portrait, realistic, 3d face, glowing eyes, shiny hair, lustrous skin, solo, embarassed  
Negative prompt: (worst quality, low quality:1.4), watermark, logo,  
Steps: 32, Sampler: DPM++ SDE Karras, CFG scale: 9, Seed: 3624413002, Size: 512x768, Model hash: aad629159b, Model: __Custom_FaceBombMix-fp16-no-ema, Denoising strength: 0.5, Clip skip: 2, ENSD: 31337, Hires upscale: 2, Hires steps: 14, Hires upscaler: R-ESRGAN 4x+ Anime6B

ColorBomb

((masterpiece, best quality, ultra-detailed, high-resolution)), solo, beautiful girl, gleaming eye, perfect eye, age 15, black white gold theme,  
Negative prompt: (worst quality, low quality:1.4), (depth of field, blurry:1.2), (greyscale, monochrome:1.1), 3D face, cropped, lowres, text, jpeg artifacts, signature, watermark, username, blurry, artist name, trademark, watermark, title, (tan, muscular, sd character:1.1), multiple view, Reference sheet, non-linear background, blurred background, bad anatomy, cropped hands, extra digit, fewer digit,  
Steps: 24, Sampler: DDIM, CFG scale: 7, Seed: 3050494714, Size: 512x768, Model hash: 627f50eea8, Model: __Custom_ColorBomb-fp16-no-ema, Denoising strength: 0.7, Clip skip: 2, ENSD: 31337, Hires upscale: 2, Hires steps: 14, Hires upscaler: Latent

HyperBomb

(masterpiece, sidelighting, finely detailed beautiful eyes: 1.2),  
Negative prompt: (worst quality, low quality:1.4), watermark, logo,  
Steps: 32, Sampler: DDIM, CFG scale: 9, Seed: 2411870881, Size: 768x512, Model hash: 16c6ca45b1, Model: __Custom_HyperBombMix-fp16-no-ema, Denoising strength: 0.7, Clip skip: 2, ENSD: 31337, Hires upscale: 2, Hires steps: 14, Hires upscaler: Latent