Colorize the pf output (especially in r2 -nn binary case)

[XVilka]

Is your feature request related to a problem? Please describe.
Currently radare2 prints both pf and built-in pf output in r2 -nn mode without any colors, even if they are enabled. It would be amazing to improve the readability to colorize them according to the current color options and colorscheme.

[radare]

also i as thinking in having ad integrated into pf.. so we can tell pf to magically guess the type stored in one place by telescoping it and making some assumptions to see if the dword matches an allocated address, or printable chars to represent a string.

also what i find out is that ad is not detecting the strings when the first byte is nul.. basically "" strings in disassembly never appear.