// Set alphas for particles
public static void SetAlpha (PlaygroundParticlesC playgroundParticles, float alpha) {
Color pColor;
for (int i = 0; i<playgroundParticles.particleCache.Length; i++) {
pColor = playgroundParticles.GetParticleColorInternal(i);
pColor.a = alpha;
playgroundParticles.SetParticleColorInternal(i, pColor);
}
}
