Avoid crashes with Suspendon Lollipop (ColorFade)

Avoid crashes with Suspendon Lollipop (ColorFade)

ColorFade (which is called on Suspend during STATE_OFF)
uses some GLSL commands to make some effects ( fade current screen
to black and white before blacking it out completelly)

However, it produces a crash on mesa. To avoid this crash,
Fragment Shader code was commented out, keeping just
gl_FragColor to set a single black color