InvestmentTrackerApp/Shared/WatchColorHex.swift

import SwiftUI

extension Color {
    /// Parses the `#RRGGBB` strings categories are stored with. Kept separate
    /// from the iOS `Color(hex:)` helper so the watch targets stay free of the
    /// rest of the app's utilities.
    init?(watchHex hex: String?) {
        guard let hex else { return nil }
        var value = hex.trimmingCharacters(in: .whitespacesAndNewlines)
        if value.hasPrefix("#") { value.removeFirst() }
        guard value.count == 6, let rgb = UInt32(value, radix: 16) else { return nil }
        self.init(
            red: Double((rgb & 0xFF0000) >> 16) / 255,
            green: Double((rgb & 0x00FF00) >> 8) / 255,
            blue: Double(rgb & 0x0000FF) / 255
        )
    }
}