how to change icon colour?

[dabh9123976]

The icon I used is a eps file with a transparent background. I want to change the colour but I can't.

What could I do to change the icon's colour?

[Bojan Živković]

Select layer with icon then go to Layer > Layer Style > Color Overlay. Set Blend Mode to Normal, Opacity to 100% and click on rectangle with color on the right side of Blend Mode drop down then pick color in Color Picker dialog.