Keys are rather yellowed/creamy coloured and not bright white.
Yamaha Tyros1 - Replacement Keys No12 Set Part - Keys Yamaha Tyros
Yamaha Tyros1 Keyboard - Replacement Last End Single Key
Yamaha Tyros1 Keyboard - Replacement Keys - White Keys (No 4 Set)
Yamaha Tyros1 Keyboard - Replacement Keys - White Keys (No 3 Set)
Yamaha Tyros1 Keyboard - Replacement Keys No12 Set Part
