You think you know until you don't: What color are tennis balls? – Metro US
Framework Sports - Maybe looking at the Hex Colour Code of a tennis ball will solve this debate once and for all? Or maybe not... 😂 What do you think? 🟢 or
Ball Tennis Pallone Color Palette | colorpalette.org
What colour are tennis balls? Roger Federer finally confirms if they're green or yellow - Mirror Online
The Colour of Tennis Balls??? - Adobe Support Community - 9734888