How to change the bar style

Hello everyone.
I am using this cool library.
How could I change the bar color from light to dark ?
I want to change the bar progress color form light green to dark green gradually.
Thanks.
The results like this: imgur com/x1mnZ0k

// here is the code I used
bar1 = lv_bar_create(lv_disp_get_scr_act(NULL), NULL);
lv_obj_set_size(bar1, 820, 10);
lv_obj_align(bar1, NULL, LV_ALIGN_IN_TOP_LEFT, -10, 0);
lv_bar_set_anim_time(bar1, 20000);
lv_bar_set_value(bar1, 100, LV_ANIM_ON);
lv_obj_set_style_local_bg_color(bar1,LV_BAR_PART_INDIC , LV_STATE_DEFAULT, LV_COLOR_GREEN);

Hi @a223344234,

Considering an older version of LVGL, you probably won’t find examples due to changes in the API. But remember that it’s necessary to apply the corresponding style according to the PART of the object.