Complex sentence: The color of its spots change from red, to yellow, to blue.It only allows one pikmin to be tossed into it, it closes, expells eight pikmin of its current spot color, then withers away.
Split into simpler sentences: The color of its spots change from red, to yellow, to blue. After you toss one pikmin in it, it closes, expells eight pikmin of its current spot color, then withers away.