What you want to do is very difficult. Especially since the background has almost the same color as the text in the first shots there.

Normally, one could use "color range" in Photoshop (I'm on PC) to select only the text's color and then change it.

What happened when I did that was this:

Then I tried an even more difficult method, to darken the image so much that it would leave only the text visible, then color it red, copy it and paste it back on top of the original image, then use a layer filter to make the text slightly thicker:

As you can see this looks very rough too.

Maybe somebody else here knows a better method but this is as far as my knowledge goes on this.