A small problem with ext changing the style!

in the layout of layout type:table, Baidu has never found which attribute to modify and how to change the background color of a single cell. So I"d like to ask the boss to take a look. Extjs is 5. 0.

Ext.onReady(function () {
    Ext.create("Ext.panel.Panel", {
        renderTo: Ext.getBody(),
        layout: {
            type: "table",
            columns: 17,
            tableAttrs: {
                style: {
                    width: "100%",
                }
            },
        },
        defaults: {
            bodyPadding: "10 20",
        },
        title: "",
        items: [
            //                
            // {html: "", colspan: 17},
            //                
            {html: "", colspan: 2,},
            {html: "*", colspan: 6},
            {html: "", colspan: 2},
            {html: "*", colspan: 3},
            {html: "", colspan: 2},
            {html: "*", colspan: 2},
            //                
            {html: "", colspan: 2,},
            {html: "*", colspan: 6},
            {html: "", colspan: 2},
            {html: "*", colspan: 3},
            {html: "", colspan: 2},
            {html: "*", colspan: 2},
            //                
            {html: "", colspan: 2,},
            {html: "PET", colspan: 1},
            {html: "12", colspan: 1},
            {html: "950", colspan: 1},
            {html: "AL", colspan: 1},
            {html: "7", colspan: 1},
            {html: "950", colspan: 1},
            {html: "PA", colspan: 1},
            {html: "15", colspan: 1},
            {html: "950", colspan: 1},
            {html: "PE", colspan: 1},
            {html: "110", colspan: 1},
            {html: "950", colspan: 1},
            {html: "PE", colspan: 1},
            {html: "110", colspan: 1},
            {html: "950", colspan: 1},
            //                
            {html: "", colspan: 2,},
            {html: "*", colspan: 3},
            {html: "*", colspan: 3},
            {html: "*", colspan: 3},
            {html: "*", colspan: 3},
            {html: "*", colspan: 3},
            //                
            {html: "", colspan: 2,},
            {html: "", colspan: 1},
            {html: "*", colspan: 1},
            {html: "dyn/cm", colspan: 1},
            {html: "", colspan: 1},
            {html: "*", colspan: 1},
            {html: "dyn/cm", colspan: 1},
            {html: "", colspan: 1},
            {html: "*", colspan: 1},
            {html: "dyn/cm", colspan: 1},
            {html: "", colspan: 1},
            {html: "*", colspan: 1},
            {html: "dyn/cm", colspan: 1},
            {html: "", colspan: 1},
            {html: "*", colspan: 1},
            {html: "dyn/cm", colspan: 1},
        ],
    });
});

there is a part of the code, is it to insert attributes in items? The document on the official website cannot be opened today. I just contacted ext and I don"t know what attributes it has.

if you want to change the background color of a single cell. Thank you, boss!