Use it on spawn or whenever you like.
I'm not sure if
set_user_rendering would work the same way.
PHP Code:
stock fm_set_rendering(entity, fx = kRenderFxNone, r = 255, g = 255, b = 255, render = kRenderNormal, amount = 16) {
new Float:RenderColor[3];
RenderColor[0] = float(r);
RenderColor[1] = float(g);
RenderColor[2] = float(b);
set_pev(entity, pev_renderfx, fx);
set_pev(entity, pev_rendercolor, RenderColor);
set_pev(entity, pev_rendermode, render);
set_pev(entity, pev_renderamt, float(amount));
return 1;
}