fetch method
void
fetch()
Implementation
void fetch() {
FlutlyVariable colorConfig = Get.find(tag: "colors");
colorConfig.getChildren().keys.forEach(
(element) => fetchColors(colorConfig, element),
);
FlutlyVariable customColorConfig = Get.find(tag: "custom_colors");
customColorConfig.getChildren().forEach(
(key, value) {
fetchCustomColors(value, key);
},
);
}