The Title Color

In my main blog, I use the template called Minima Black. Which is fine by me in the overall, but I can't stand the neonish green color of the posts' titles. The problem is, I don't know how to get white. The current color "code" it has now is the following:

color:#ad9

Which gives the above-mentioned green (and is, I've discovered, the same color that the hyperlinks turn to when hoovered). a7a is purple (the same of visited links), and 9ad is a pale blue (of hyperlinks in th right-side bar). Some other two-letter-and-one-number codes give other colours.
I've also discovered that when you enter a code that the system (html code or language, I guess) do not recognise, the font then changes to gray --the "generic" colour for the post body (in my template).

So, I hope this would be somehow understandable. If anyone knows further and wants to type some knowledge, please do.