Very fun.

I put in some scientific proteins, and it spits out their common fluorescence staining colors:

ZO1 (stain tight-junctions, often blue): https://picular.co/zo1 (see https://www.google.com/search?tbm=isch&source=hp&biw=1399&bi...)

hN1 (a protein usually stained red or green with GFP or mCherry): https://picular.co/hn1 (see https://www.thermofisher.com/antibody/product/HN1-Antibody-P...)