RGB adjust or ServiceBook-Sony KV-28FX20B Wide Screen TV

[DP]

I just got a somewhat used Sony KV-28FX20B 16x9 TV.
It has 2 scart connections that handle several Composite, S-Vid and RGB inputs.
In general the color for cable reception is very good but the AV inputs are not quite right.

The Composite inputs tend to be a bit too blue while the RGB input tends to be too yellow.

I am presuming that the AV input color can be adjusted independently of each other and too that end I am looking for a Service book to assist me in the endeavor.
However, if they are not independently adjustable then perhaps the DVD player is having color playback problems.

Thanks, DP