I originally reffered this to GitHub as an issue, but they bounced me here.
Basically as can be seen in this code sniipit here:
, hexadecimal numbers in java 0x60 for example are highlighted correctly, but the letter part of a hexadecimal number is not. In the example 0x6A, 0x6 is highlighted correctly, but the 'A' is left standard colour. The same is true for all hexadecimal digits A-F