Sigh...The whole Aryan Invasion theory has now been pretty much disproved. The whole idea of the pre Aryan Invasion dark skinned natives and the light skinned invaders has been effectively traduced as myths invented by Europeans.
Many subgroups of Indians are Caucasian in origin. Many are not.
The descriptions from The Suttas are Iconographic , not literal.this iconography has its origins in the caste system and is inherently flawed as a literal description. See Ambhedkar et al.
See also The Myth of The Aryan Invasion http://www.archeologyonline.net
and for its origin Who Were The Aryans ; Hitlers Persistant Aryan Myth http://www.archeology.about.com
If the first link does not work google The Myth Of The Aryan Invasion and several pages will come up on the subject, look for archeologyonline. Although as i say there are lots of articles to choose from.
The description of being Golden Skinned and The various Marks of the Buddha are common to all religious leaders from the Indian Subcontinent. They are indicators of status rather than literal. The 32 Marks Of A Buddha are identical to the 32 Marks of a Jain Tirthankara. The founder of Jainism who was a contemporary Of The Buddha was also described as Golden Skinned. In more recent times The Vaisnav saint Chaitanya Mahaprabhu ( 17th century ) was also described as having the 32 Marks and Golden Skin.
In modern times Ramakrishna and Ramana Maharishi were described as ..guess what.
In fact there exists a contemporary description of the Buddha which avoids the Iconography and is more literal, and I'm blowed if I can lay hands on the source at the moment. It describes him as tall and imposing with a pleasing expression and manner, but does not mention his skin tone.
The going for refuge is the door of entrance to the teachings of the Buddha.