how come everyone has different colors for different rashis?

bphs and saravalli are similar for mesh vrishabh and mithun.. after that?
why ? on what basis is this color alloted?

and if  i want to increase the jupiter vibration as it is posited in dhanu.
are transits important in vedic astro? for this point..

also i read that

chara rashis = bramha (which is rajasic)
sthir            = shiva     ( tamasic )
dwishbhava = vishnu    (sattvic )

but karka is a chara rashi and is supposed to be sattvic same is the case with 5 simha which is sthir(shiva) and should be tamasic but is sattvic.

this

bramha     shiva      vishnu
---------    -------     --------
chara        sthir       dwishbhaav
rajasic      tamasic    sattvic
1               2             3                - is applicable in this line
4               5             6                - XXXX
7               8             9                - is again applicable here
10             11           12               - XXXX

please tell me what is this? why is it like this?

please somebody reply i m stuck here.

also how is it that mercury is rajasic planet and the rashis it rules
(mithun, kanya) is tamsic?
mars being tamasic and mesh and scorpio being rajasic?

why is it that bramha, a rajasic significator rules sani a tamsic planet?

is it that they dont have any relation? or what?

please reply. i cant move further because of this.

Namaskaar,
We have to follow Maharishi Paraashara and BPHS is taken to be the most authoritative. The colors given are from very old traditional sources. It would be great if you could post the colors as given in Saraavali. We dont know for now the bsis for alloting the colors to the Raashis.

To activate Guru in a chart advice the color of the Raashi In which Guru is posited at birth and not at transit (Gochar).
RishRahul and vivek.

kanya is variegated, vrishchika is reddish brown, makar is again variegated,
kumbh is deep-brown in BPHS

here in this section .. kanya is grey, vrshchika is yellow, makar is blue, kumbh is violet.

and saraavali says
"
40-4l. Colours of Rāśis. From Aries onwards the following 12 colours are allotted to the various Rāśis, respectively,
red, white, green, pink, brown, gray, variegated, black, golden, yellow, deep-brown and white. If an idol of the Lord of the Ascendant is made in the colour allotted and is worshipped, the native will destroy his enemies, just as Lord Indra destroyed the demons. "

makar, kumbh and meen are not shades of blue anywhere.

do i have a bad copy?