VB处理一个文本，求思路 - 编程论坛

有如下一个文本文件，我只关心color下面的那些。
想写一个程序，读入这个文本，然后可以显示每个关键字对应的颜色和RGB值，如polygon->day->background，
然后在它右边写一个按钮，点击按钮可以屏幕取色，将取到的颜色替代目前的颜色值
最后保存文件。

先问下用什么方法可以比较方便做到？

程序代码：

{
    "vesion": "2.0",
    "enableDirectionalRoadLabel": 1,
    "roadWidth": {
        "highway":         [24, 20, 18, 16, 14, 12, 10, 8, 6, 4, 1, 1],
        "expWay":          [20, 18, 16, 12, 10,  8,  6, 4, 3, 1, 1, 1],
        "arterial":        [20, 18, 16, 12, 10,  8,  6, 4, 3, 1, 1, 1],
        "localMajor":      [18, 14, 14,  8,  6,  3,  1, 1, 1, 1, 1, 1],
        "local":           [12,  8,  4,  1,  1,  1,  1, 1, 1, 1, 1, 1]
    },
    "color": {
        "buildingAndTmcEdge": {
            "day": {
                "building"  : "c5c1c1",
                "tmc"       : "ffffff"
            },
            "night": {
                "building"  : "324f64",
                "tmc"       : "ffffff"
            }
        },
        "polygon": {
            "day": {
                "background"    : "FFFFCE",
                "fourColorOne"  : "FFDAB4",
                "community"     : "FFDAB4",
                "onground"      : "FFDAB4",
                "fourColorTwo"  : "FFDAB4",
                "fourColorThree": "FFDAB4",
                "school"        : "F7DB9C",
                "fourColorFour" : "FFDAB4",
                "hospital"      : "F7DB9C",
                "greenArea"     : "7BCB6B",
                "water"         : "52AEEF",
                "closedArea"    : "FFDAB4",
                "underground"   : "FFDAB4",
                "park"          : "FFDAB4",
                "building"      : "FAF9F5",
                "subwayStation" : "F89F7C"
            },
            "night": {
                "background"    : "081C29",
                "fourColorOne"  : "FFDAB4",
                "community"     : "FFDAB4",
                "onground"      : "FFDAB4",
                "fourColorTwo"  : "FFDAB4",
                "fourColorThree": "FFDAB4",
                "school"        : "183039",
                "fourColorFour" : "FFDAB4",
                "hospital"      : "183039",
                "greenArea"     : "213818",
                "water"         : "004D6B",
                "closedArea"    : "FFDAB4",
                "underground"   : "FFDAB4",
                "park"          : "FFDAB4",
                "building"      : "324f64",
                "subwayStation" : "f89f7c"
            }
        },