Google column chart customization

Question

For example, i have chart that displays my weight changes by monthes.

Monthes goes on hAxis and weight values on vAxis

I have a few question:

1) How to set hAxis from 0 to, say, 70? My initial weight was 70. I want to set hAxis baseline to this value. Thats allows me to show my weight changes. For example, in november it was 75 kgs (+5kgs) and this bar should go over the hAxis baseline. In december my weight equal 65 kgs (-5 kgs) and this bar should go under the hAxis baseline. Is it possible?

2) How to change bars fill color?

Answer 1

set vAxis baseline property to needed value:

vAxis:{baseline:70}