You can convert Chroma into a Schnell-compatible safetensors file like this:
apt-get update && apt-get install aria2 -y && pip install safetensors
# Create Schnell-compatible variant of Chroma by downloading both Chroma and Schnell safetensor files, and copying Chroma's matching weights over to Schnell. This works because lodestone *distilled* the guidance layers instead of completely pruning them, so we can actually just use Schnell's guidance stuff. This comes at the cost of bloating the model back to Schnell's original size, but it's probably the easiest approach for diffusers compatbility for now.
CHROMA_VERSION="19"
aria2c -x 16 -s 16 -o "./chroma.safetensors" "https://huggingface.co/lodestones/Chroma/resolve/main/chroma-unlocked-v${CHROMA_VERSION}.safetensors?download=true"
aria2c -x 16 -s 16 -o "./flux1-schnell.safetensors" "https://huggingface.co/black-forest-labs/FLUX.1-schnell/resolve/main/flux1-schnell.safetensors?download=true"
python3 -c '