Paramasaayika mandala is the second most common Hindu temple format, set on a 9 x 9 grid. These were built as ceremonial temples - by kings and regional communities. They are typically very large.
The blue squares are Brahma pada where the main and/or largest idol of the temple resides.The deep saffron square in the center symbolically represents Universal One (or Space/Eternity/Universal Principle/Purusa) in Hindu tradition, understanding which is considered the ultimately goal of all Hindu spiritual activity. In some designs and texts all 9 central squares are considered as Brahma padas.
The white squares surrounding the Brahma pada are Devika (Devaika) padas - the zone where gods (devas) reside. 
The light green squares at the outermost periphery are Paisachikas padas - the zone of demons, fears, suffering. On the east edge of the temple are always present Surya (Sun) and Indra, who rythmically bring light and hope everyday.
The light saffron squares forming the third outer encirclement are Manusha padas - the zone where human beings live, walk and symbolically make choice between good and evil, Devas (gods) and Paisachikas (demons), as they walk towards the central core for a darsana (darshan, vision).
In Hindu temple architecture, the designs range from simple 1 pada (used for yoga, meditation with self as temple) to 1024 pada or 32x32 grid superstructure temples.

Further description about Paramasayika mandala: Stella Kramirsch, The Hindu Temple (2 Volumes) (Pt. 1 &amp; 2), ISBN 978-8120802223
Own work
Mark.muesse