This hack removes color emphasis bits at PPUMASK $2001, which was used in this game, making picture bright and colorful as it should be.
Database match: QIX (USA)
Database: No-Intro: Nintendo Entertainment System (v. 20210216-231042)
File SHA-1: D9492DD8F558B7DB25E6FEE6B95F008E9F7E6061
File CRC32: 4724713D
ROM SHA-1: B0F6CAF1292865C998B6A4A93DAE3E66B7D00C39
ROM CRC32: 95E4E594