pal = 5836;
siner = 0;
pal_index = 0.5 + (sin(obj_cliffglow.siner) * 0.5);

function scr_rocklayercolour_start()
{
    if (event_number == 0)
        pal_swap_set(spr_cliffglow_palette, obj_cliffglow.pal_index, false);
}

function scr_rocklayercolour_end()
{
    pal_swap_reset();
}

layer_script_begin(cliff_layer_name, scr_rocklayercolour_start);
layer_script_end(cliff_layer_name, scr_rocklayercolour_end);