Toshiba TECRA A11 Series Maintenance Manual page 299

Grip Color
Some screws have a colored grip area to help you determine the length of the screw.
[Normal grip]

Even numbered length screws: Brown

Odd numbered length screws

Special length screw: Blue
[Special grip]

Even numbered length screws: Yello

Odd numbered length screws:

Special length screw: Green
"Special length screw" means screws whose length is indicated in an integral number to the
first decimal places such as 2.5 mm, 2.6 mm and so on.
TECRA A11/S11/P11 Satellite Pro S500 Series Maintenance Manual (960-784) [CONFIDENTIAL]
: White
w
Pink
Grip area
4-9