d3.js - How do I change color of a bar in Vega-lite Bar Chart? -


i want change default blue color of bar in vega-lite bar chart. how can it? posting json specification below:

{  "data": {  "values": [   {"a":"a", "b":28}, {"a":"b", "b":55}, {"a":"c", "b":43},   {"a":"d", "b":91}, {"a":"e", "b":81}, {"a":"f", "b":53},   {"a":"g", "b":19}, {"a":"h", "b":87}, {"a":"i", "b":52}  ]  },  "mark": "bar",  "encoding": {  "x": {bin:false, "type": "ordinal","field": "a"},  "y": {"type": "quantitative","field": "b"}  } }

thanks in advance.

i found answer own question. :) supposed add color key inside encoding block. please see updated code below:

{  "data": {  "values": [   {"a":"a", "b":28}, {"a":"b", "b":55}, {"a":"c", "b":43},   {"a":"d", "b":91}, {"a":"e", "b":81}, {"a":"f", "b":53},   {"a":"g", "b":19}, {"a":"h", "b":87}, {"a":"i", "b":52}  ] },  "mark": "bar",  "encoding": {  "x": {"type": "ordinal","field": "a"},  "y": {"type": "quantitative","field": "b"},  "color": {"value": "#ff9900"} } }

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