Where is the Plate to read the Piaggio Porter Color Code FOUND?
The plate to read the color code of our Piaggio Porter, we can find it near the headrest, passenger side, exactly under the seat belt. (I attach photos) 
The nameplate Gives us the possibility of tracing a Fundamental 3 information:
1 Original Paint Manufacturer (PPG)
2 Paint color (White)
3 Paint code (W10)
Below we see the Color Codes of the Piaggio Porter Pick-up from 09 onwards
BODYWORK COLOR CODES PICK-UP VERSION
Code - Color
W10 - White
B24 - Blue
R16 - RED
A01 - Dark blue
BODYWORK COLOR CODE VAN VERSION
Code - Color
W10 - White
B24 - Blue
R16 - RED
G15 - Metallic green
S13 - Metallic dark grey
A01 Dark blue
COMPLETE COLOR RANGE PIAGGIO PORTER 2011
Color - Code
Orange - 953
Orange - RAL 2011 911/A
Blue Action - 238 / A
White - W10
White - (of white silk) 576
Blue River - PD 1203
Ice Blue - 215 / A
Green Ice - 304/A
Lime Yellow - 943 / A
Yellow - 937
Light yellow - 933 / A
Black - 83
Red - R16
Sand - 741 / B
Pantone Green - 374/C 316 / A
Sherwood green - 322
** Material and photos taken from the Piaggio Porter use and maintenance manual ***