Function is_grease_value 

pub const fn is_grease_value(value: u16) -> bool

Available on 32-bit or 64-bit only.

Checks if a given u16 value is a valid GREASE value.

GREASE values follow the pattern where both bytes are of the form 0x_A, where the high nibble can be 0-E (0x0A0A through 0xEAEA).