use the stored color at bright display

package com.simplemobiletools.flashlight.activities

import android.graphics.drawable.ColorDrawable

import android.os.Bundle

import android.view.WindowManager

import com.simplemobiletools.flashlight.R

import com.simplemobiletools.flashlight.extensions.config

import kotlinx.android.synthetic.main.activity_bright_display.*

class BrightDisplayActivity : SimpleActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {

        super.onCreate(savedInstanceState)

        setContentView(R.layout.activity_bright_display)

        supportActionBar?.hide()

        display_holder.background = ColorDrawable(config.brightDisplayColor)

    }

    override fun onResume() {

package com.simplemobiletools.flashlight.helpers

import android.content.Context

import android.graphics.Color

import com.simplemobiletools.commons.helpers.BaseConfig

class Config(context: Context) : BaseConfig(context) {

    var stroboscopeFrequency: Long

        get() = prefs.getLong(STROBOSCOPE_FREQUENCY, 1000L)

        set(stroboscopeFrequency) = prefs.edit().putLong(STROBOSCOPE_FREQUENCY, stroboscopeFrequency).apply()

    var brightDisplayColor: Int

        get() = prefs.getInt(BRIGHT_DISPLAY_COLOR, Color.WHITE)

        set(brightDisplayColor) = prefs.edit().putInt(BRIGHT_DISPLAY_COLOR, brightDisplayColor).apply()

}

package com.simplemobiletools.flashlight.helpers

const val BRIGHT_DISPLAY = "bright_display"

const val BRIGHT_DISPLAY_COLOR = "bright_display_color"

const val STROBOSCOPE = "stroboscope"

const val TURN_FLASHLIGHT_ON = "turn_flashlight_on"

const val IS_ENABLED = "is_enabled"