Clearing the high 3 bits of the PPU $2001 register improves brightness in some games.
https://wiki.nesdev.com/w/index.php/PPU_registers#PPUMASK
https://wiki.nesdev.com/w/index.php/Colour-emphasis_games
0080D5:
A9 08
01E01B:
A9 18
01E1FE:
A0 0A
01E2B5:
A0 08
01EA00:
A9 08
01EA1F:
A0 18
Database match: Jungle Book, The (USA)
Database: No-Intro: Nintendo Entertainment System (v. 20180803-121122)
File SHA-1: A2D12631F4FA1BD2FF6415004265C66CD40B4AF5
File CRC32: 4B849368
ROM SHA-1: 8CF2EA5C72FD2EB3DD4493494DD959E4FC00BA2A
ROM CRC32: 61179BFA