Learn about how to create and assign colors
Colors can be set for all objects in the window. All have a color method that can be used to get and set colors, for example:
# Create a new, green square
Square.new(color: 'green')
# Create a square, then set its color later
s = Square.new
s.color = 'blue'
# Use hexadecimal values to set a color
s.color = '#ff0000'
# Use red, green, blue, alpha values to set the color
s.color = [1, 0.5, 0.2, 1]
Colors are represented by the Color class. Colors can be created from keywords (based on css), a hexadecimal value or an array containing a collection of red, green, blue, and alpha (transparency) values expressed as a Float from 0.0 to 1.0. Here are some examples for creating colors:
Color.new
Color.new(<keyword>)
Color.new(<hex>)
Color.new([r, g, b, a])
# Where...
# `r` is red
# `g` is green
# `b` is blue
# `a` is the alpha channel, which affects opacity
A color keyword can be any one of the following: navy blue aqua teal olive green lime yellow orange red brown fuchsia purple maroon white silver gray black
Additionally, use 'random' to produce a random color value.
Change the opacity, or transparency, of an object by using the opacity method:
square.color.opacity = 0.5
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