Can't use many transparent default values

[Diu]

Default values with transparency, starting with one or two zeroes, break the color parsing and then crash the app.

I didn't look too deep into the issue, but

android-ColorPickerPreference/ColorPickerPreference/src/main/java/net/margaritov/preference/colorpicker/ColorPickerPreference.java

Line 77 in e7ba5e6

String mHexDefaultValue = a.getString(index);

gets a truncated string, #00000000 and #01000000 become #0 and #1000000 respectively for example.