* fix for nil color values
* fix for nil color values

tuanphung/EasyAnimation,ramoslin02/EasyAnimation,stvvan/EasyAnimation,bestwpw/EasyAnimation,ArthurKK/EasyAnimation,icanzilb/EasyAnimation,stvvan/EasyAnimation,ArthurKK/EasyAnimation,tuanphung/EasyAnimation,ramoslin02/EasyAnimation,icanzilb/EasyAnimation,bestwpw/EasyAnimation