Colour constant

Numeric value

Pattern

COL_SOLID

0xFFFFFF

Main colour (solid white/active)

COL_NONE

 0

No colour   (solid black)

COL_INVERT

-1

Opposite to the current colour

COL_TRANSP

-2

No colour   (transparent)

COL_GREY50

-3

50% grey

COL_GREY25

-4

25% grey

COL_HLN50

-5

50% horizontal lines

COL_HLN33

-6

33% horizontal lines

COL_HLN25

-7

25% horizontal lines

COL_VLN50

-8

50% vertical lines

COL_VLN33

-9

33% vertical lines

COL_VLN25

-10

25% vertical lines

Reserved

-11

COL_DGL33

-12

33% / diagonal lines

COL_DGL25

-13

25% / diagonal lines

Reserved

-14

COL_DGR33

-15

33% \ diagonal lines

COL_DGR25

-16

25% \ diagonal lines

COL_SPL33

-17

33% / dotted diagonal lines

COL_SPL25

-18

25% / dotted diagonal lines

COL_SPR33

-19

33% \ dotted diagonal lines

COL_SPR25

-20

25% \ dotted diagonal lines

Reserved

-21 … -29

Percentage fill

-30 … -50

A pixel is turned on with specific probability.

The value -30 is equivalent to probability 0 (pixel is never on).

Every next value is increasing the probability by 5%.

Thus, value -31 is probability 5%, value -32 is probability 10%, and so on.

Value -50 represents probability 100% (pixel is always on).