Question

Is it possible to change the header font color in Latex?

Answer 1

You could have a look at the sectsty package.

The secsty package provides a set of commands for changing the fount 1 used for the various sectional headings in the standard LATEX 2ε document classes

From the manual:

Make sure you include the package in your document by saying in your
document preamble:

\usepackage{sectsty}

You will then have some new commands available. For example:

\allsectionsfont{\sffamily}

will give you sanserif for all sectional headings.
 

• Here is the full manual