[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] loserskater:
This will allow you to change the background color/transparency of the notification panel in real time without rebooting.

We're going to be working with the following two files:

SecSettings.apk

SystemUI.apk

KEY

REMOVE what's in BLUE

ADD what's in RED

Note:

If you've already implemented my Clock mod and added the color picker files, you'll have to replace it with what I've attached as I've changed how the color picker works. It now saves your setting instead of reverting it to default everytime you leave and come back to the menu. I'll be updating the clock mod right now.

Issues:

There is a tiny line that goes across just under the brightness slider/notification toggles that I cannot figure out how to remove. It's only noticeable when you use colors. If you're just using transparency then it's hard to tell.

SecSettings.apk

Navigate to /res/values/strings.xml

Add the following to the end of the file

<string name="notification_panel_color_title">Notification panel color</string>
<string name="notification_panel_color_summary">Change the background color of the notification panel</string>
<string name="dialog_color_picker">Color Picker</string>
<string name="press_color_to_apply">Press on Color to apply</string>

Navigate to /res/values/ids.xml

add the following to the end of the file

<item type="id" name="color_picker_view">false</item>
<item type="id" name="old_color_panel">false</item>
<item type="id" name="new_color_panel">false</item>

Navigate to /xml/display_settings.xml

Add the following line wherever you would like it to show in the menu

<com.loser.colorpicker.ColorPickerPreference android:persistent="false" android:title="@string/notification_panel_color_title" android:key="notification_panel_color" android:summary="@string/notification_panel_color_summary" android:defaultValue="0xff000000" alphaSlider="true" />

Navigate to /smali/com/android/settings/DisplaySettings.smali

.field private mMultiWindowModeObserver:Landroid/database/ContentObserver;

.field private mMultiWindowPref:Landroid/preference/CheckBoxPreference;

[COLOR="Red"].field private mNotificationPanelColor:Lcom/loser/colorpicker/ColorPickerPreference;[/COLOR]

.field private mNotificationPulse:Landroid/preference/CheckBoxPreference;

.field private mPowerSavingMode:Landroid/preference/CheckBoxPreference;

.method private updateState()V

iget-object v3, p0, Lcom/android/settings/DisplaySettings;->mDisplayBatteryLevel:Landroid/preference/CheckBoxPreference;

invoke-virtual {p0}, Lcom/android/settings/DisplaySettings;->getContentResolver()Landroid/content/ContentResolver;

move-result-object v0

const-string v4, "display_battery_percentage"

invoke-static {v0, v4, v2}, Landroid/provider/Settings$System;->getInt(Landroid/content/ContentResolver;Ljava/lang/String;I)I

move-result v0

if-eqz v0, :cond_4

move v0, v1

:goto_1
invoke-virtual {v3, v0}, Landroid/preference/CheckBoxPreference;->setChecked(Z)V

[COLOR="red"]iget-object v0, p0, Lcom/android/settings/DisplaySettings;->mNotificationPanelColor:Lcom/loser/colorpicker/ColorPickerPreference;

invoke-virtual {p0}, Lcom/android/settings/DisplaySettings;->getContentResolver()Landroid/content/ContentResolver;

move-result-object v3

const-string v4, "notification_panel_color"

const v5, -0xffffff

invoke-static {v3, v4, v5}, Landroid/provider/Settings$System;->getInt(Landroid/content/ContentResolver;Ljava/lang/String;I)I

move-result v3

invoke-static {v3}, Ljava/lang/Integer;->valueOf(I)Ljava/lang/Integer;

move-result-object v3

const/16 v5, 0x0

invoke-virtual {v0, v5, v3}, Lcom/loser/colorpicker/ColorPickerPreference;->onSetInitialValue(ZLjava/lang/Object;)V[/COLOR]

iget-object v0, p0, Lcom/android/settings/DisplaySettings;->mTouchKeyLight:Landroid/preference/ListPreference;

invoke-virtual {p0}, Lcom/android/settings/DisplaySettings;->getContentResolver()Landroid/content/ContentResolver;

move-result-object v3

const-string v4, "button_key_light"

.method public onCreate(Landroid/os/Bundle;)V

const-string v11, "display_battery_level"

invoke-virtual {p0, v11}, Lcom/android/settings/DisplaySettings;->findPreference(Ljava/lang/CharSequence;)Landroid/preference/Preference;

move-result-object v11

check-cast v11, Landroid/preference/CheckBoxPreference;

iput-object v11, p0, Lcom/android/settings/DisplaySettings;->mDisplayBatteryLevel:Landroid/preference/CheckBoxPreference;

[COLOR="red"]const-string v11, "notification_panel_color"

invoke-virtual {p0, v11}, Lcom/android/settings/DisplaySettings;->findPreference(Ljava/lang/CharSequence;)Landroid/preference/Preference;

move-result-object v11

check-cast v11, Lcom/loser/colorpicker/ColorPickerPreference;

iput-object v11, p0, Lcom/android/settings/DisplaySettings;->mNotificationPanelColor:Lcom/loser/colorpicker/ColorPickerPreference;

iget-object v11, p0, Lcom/android/settings/DisplaySettings;->mNotificationPanelColor:Lcom/loser/colorpicker/ColorPickerPreference;

invoke-virtual {v11, p0}, Lcom/loser/colorpicker/ColorPickerPreference;->setOnPreferenceChangeListener(Landroid/preference/Preference$OnPreferenceChangeListener;)V[/COLOR]

invoke-virtual {p0}, Lcom/android/settings/DisplaySettings;->getActivity()Landroid/app/Activity;

move-result-object v11

invoke-static {v11}, Lcom/android/settings/Utils;->isTablet(Landroid/content/Context;)Z

move-result v11

if-eqz v11, :cond_6

.method public onPreferenceChange(Landroid/preference/Preference;Ljava/lang/Object;)Z

:catch_2
move-exception v0

.line 1038
const-string v1, "DisplaySettings"

const-string v2, "could not persist Touch key light setting"

invoke-static {v1, v2, v0}, Landroid/util/Log;->secE(Ljava/lang/String;Ljava/lang/String;Ljava/lang/Throwable;)I

goto/16 :goto_4

.line 1040
:cond_9
[COLOR="red"]const-string v2, "notification_panel_color"

invoke-virtual {v2, v0}, Ljava/lang/String;->equals(Ljava/lang/Object;)Z

move-result v2

if-eqz v2, :cond_next

invoke-static {p2}, Ljava/lang/String;->valueOf(Ljava/lang/Object;)Ljava/lang/String;

move-result-object v2

const-string v1, "^#"

const-string v3, ""

invoke-virtual {v2, v1, v3}, Ljava/lang/String;->replaceFirst(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;

move-result-object v3

invoke-static {v3}, Ljava/lang/Integer;->parseInt(Ljava/lang/String;)I

move-result v1

invoke-virtual {p0}, Lcom/android/settings/DisplaySettings;->getContentResolver()Landroid/content/ContentResolver;

move-result-object v2

const-string v3, "notification_panel_color"

invoke-static {v2, v3, v1}, Landroid/provider/Settings$System;->putInt(Landroid/content/ContentResolver;Ljava/lang/String;I)Z

goto/16 :goto_4

:cond_next[/COLOR]
const-string v2, "quick_launch"

invoke-virtual {v2, v0}, Ljava/lang/String;->equals(Ljava/lang/Object;)Z

move-result v2

Now download the attached zip and extract to the root of your SecSettings folder.

Compile and then decompile and open up /res/values/public.xml

Open /smali/com/loser/colorpicker/ColorPickerDialog.smali

There should be a total of 6 id's you need to get. Make sure you're looking at the type as there's a layout and string with the same name.

That's it for SecSettings. Compile.