Dear Yong Peng,

> However, in this case, in meditation practice, it does not mean

anything close to a 'totality-dimension' as Ven. Thanissaro translated.

"Kasi.na" in meditation practice does mean "totality", according to
the Tipitaka and Atthakatha.
See the article in PTS Margaret Cone's doctionary:
http://www.lioncity.net/buddhism/index.php?showtopic=31453

> Another thing that I have been thinking about is the color 'niila'.

For the discussion of kasina colors, see the article:
http://www.lioncity.net/buddhism/index.php?showtopic=31677

Metta, Dmytro