Sorry guys, I didn't take the word rainbow on purpose, that is not a big deal to start and win with a single word, there are hundreds to pick from, specially multi-syllables (should we make a new rule: start only with one or two syllable words?)
I knew the S could fit but I didn't check further, nevertheless... I found another word:
rainbowy
Anyway, lets start a new one:, this time taking the first word of the name of this game:
change