[Solved]
I've found on the web guide to fix chroma on Component output
Switch Plasma/LED Tv on Component input
Press Menu > Setup > A/V System
Select in VIDEO Out : SCART
Press Green bottom to activate
Press Menu > Setup > A/V System
Select in COLOR FORMAT : CVBS
Press Green bottom to activate
Press Menu > Setup > A/V System
Select in VIDEO Out : yPbPr
Select resolution in 720p or 1080i
Press Green bottom to activate