Each is one line to turn on. The value in the brackets is the one a plain number (or name) sets, and every other setting goes in by name: glow(0.8, { radius: 40 }), or in Python glow(0.8, radius=40). Every effect also has amount, from 0 to 1: how much of it is mixed in.
rgbSplit
Red and blue pulled apart, like a cheap lens or a bad signal.
JavaScript
Python
rgbSplit(4)
rgb_split(4)
Setting
In Python
Starts at
Can be
size
size
4
0 to 60
angle
angle
0
-360 to 360 degrees
spread
spread
false
true or false (True, False)
amount
amount
1
0 to 1
hue
Every colour moved round the colour wheel. With speed, the colours keep turning.
JavaScript
Python
hue(90)
hue(90)
Setting
In Python
Starts at
Can be
shift
shift
90
-360 to 360 degrees
speed
speed
0
-720 to 720
amount
amount
1
0 to 1
saturate
More colour, or less: at 0 the picture is grey.
JavaScript
Python
saturate(1.6)
saturate(1.6)
Setting
In Python
Starts at
Can be
strength
strength
1.6
0 to 4
amount
amount
1
0 to 1
brighten
Brighter, or darker below 1.
JavaScript
Python
brighten(1.3)
brighten(1.3)
Setting
In Python
Starts at
Can be
strength
strength
1.3
0 to 4
amount
amount
1
0 to 1
contrast
Lights lighter and darks darker.
JavaScript
Python
contrast(1.4)
contrast(1.4)
Setting
In Python
Starts at
Can be
strength
strength
1.4
0 to 4
amount
amount
1
0 to 1
invert
A negative: every colour swapped for its opposite.
JavaScript
Python
invert()
invert()
Setting
In Python
Starts at
Can be
amount
amount
1
0 to 1
posterize
Only a few shades of each colour, like a poster.
JavaScript
Python
posterize(4)
posterize(4)
Setting
In Python
Starts at
Can be
levels
levels
4
2 to 16, a whole number
amount
amount
1
0 to 1
tint
Seen through coloured glass.
JavaScript
Python
tint("gold")
tint("gold")
Setting
In Python
Starts at
Can be
colour
colour
"gold"
any colour
amount
amount
1
0 to 1
duotone
Two colours only: one for the dark parts and one for the light.
JavaScript
Python
duotone("midnightblue", "gold")
duotone("midnightblue", "gold")
Setting
In Python
Starts at
Can be
dark
dark
"midnightblue"
any colour
light
light
"gold"
any colour
amount
amount
1
0 to 1
colourCycle
Brightness becomes a colour from a palette, and the colours move round.