From MSDN:
To set syntax coloring for user-defined keywords
In the same directory as msdev.exe, use the Text editor or Windows Notepad to create a text-only file named usertype.dat.
Add your keywords to usertype.dat, one keyword per line. Note The usertype.dat file is read during initialization. It cannot be renamed, nor can it be reloaded during an editing session. The syntax coloring mechanism checks the usertype.dat file last. Thus, all previously defined color settings take precedence over the user-defined keywords.
Save the file as a text-only file, exit, and then restart Visual Studio.
From the Tools menu, choose Options.
Select the Format tab.
In the Colors box, select User Defined Keywords.
Set the font, font size, foreground color, and background color to your preferences. For more information, see <a href="http://msdn.microsoft.com/en-us/library/aa265717(v=vs.60).aspx#_asug_to_change_colors_used_for_syntax_coloring" sab="1378">To change colors used in syntax coloring.
Click OK.
I don't know better way, but perhaps, you can download some extensions for this. Also, you have to make function list yourself or perhaps someone can make it from header