Stroop Color Game (Juego de Colores)

Implement the logic functions for a Stroop-effect color game.

Write two functions:

1. getRound(round) — returns { word, displayColor }
   • word: the color NAME to display (changes each round)
   • displayColor: a different color to render it in (tricky!)
2. handleChoice(chosen, state) — returns { score, round, gameOver }
   • chosen: the button the user tapped
   • state: { score, round } — current state
   • Increment score if chosen matches the word, advance round
   • End game after 20 rounds