Color with date range

How Can i configure color if I use date range ?
When i configure color on the date range it no longer works.
I use data range
"from": "now-3d/d",
"to": "now"

{
"vis": {
"colors": {
"March 13th 2016, 01:00:00.000 to March 16th 2016, 14:43:35.351: Average TOTAL_MOD54_avecpra": "#7EB26D",
"March 13th 2016, 01:00:00.000 to March 16th 2016, 14:43:35.351: Average TOTAL_MOD54_libre_avecpra": "#629E51",
"March 26th 2016, 01:00:00.000 to March 29th 2016, 12:03:23.555: Average TOTAL_MOD54_libre_avecpra": "#629E51",
"March 26th 2016, 01:00:00.000 to March 29th 2016, 12:03:23.555: Average TOTAL_MOD54_avecpra": "#3F6833"
}
}
}

Thanks!

Is this a Kibana questions, cause you posted it in Logstash.

For example, I want to force color of this graph:
but the date change every day .... :frowning:

You can do a "split bars" on the same date historgram, which will create a different color per day.