Where does “czerwoniutki” come from?

czerwoniutki (Polish) comes from Polish Czerwony, from Old Polish czerwony, from Proto-Slavic čьrvenъ, from Proto-Slavic čьrvь, from Proto-Balto-Slavic kírmis, from Proto-Indo-European kʷŕ̥mis — worm.

Ancestry of “czerwoniutki”, step by step

Step	Language	Word	Meaning
1	Polish	Czerwony	red
2	Old Polish	czerwony	red
3	Proto-Slavic	čьrvenъ	red
4	Proto-Slavic	čьrvь	worm, larva
5	Proto-Balto-Slavic	kírmis	worm
6	Proto-Indo-European	kʷŕ̥mis	worm

Every word from Proto-Indo-European kʷŕ̥mis →Every word from Proto-Balto-Slavic kírmis →Every word from Proto-Slavic čьrvь →