地类图斑是一个用shp生成的geojson文件，但是没有name字段，json一段如下：
"type":"FeatureCollection", "features": [
{"type":"Feature","geometry":
{
"type":"Polygon",
"coordinates":[[[37……,……],……,[……,……]]]},
"properties":{
"BSM":……,"YSDM":"……","TBYBH":"","TBBH":"……","DLBM":"022","DLMC":"茶园","QSXZ":"30","QSDWDM":"……",
"QSDWMC":"","ZLDWDM":"……","ZLDWMC":"某某村","GDLX":"","KCLX":"","KCDLBM":"","TKXS":0,"TBMJ":……,
"XZDWMJ":……,"LXDWMJ":0,"TKMJ":0,"TBDLMJ":……,"PZWH":"","BGJLH":"","BGRQ":"……","DLBZ":"","GDPDJ":"",
"SHAPE_Leng":……,"SHAPE_Area":……}
}
我想要按照这里面的地类编码把每一个feature用不同的颜色标识出来该怎么做？我现在已生成图像如下
