Hi.
If I understand you correctly, this is my answer:
There are 4 Values in this order: Red, Green, Blue, Opaque (transparency).
Every value has to be between 0 and 1 (0, 0.1, 0.2, 0.456 … 1), while 1 is 100%.
So if you like to have a red tint/color you need 1, 0, 0, 1, so vector4(1, 0, 0, 1).
Mixing them will get the color you need. There are different tools in the web helps you to geht the right values using a RGB-Selector. You choose the color and you will get a RGB-Value.
Transparency is also between 0 and 1, 1 means 100% visible (=no transparency)
Here are some examples:
COLOR_ORANGE = vmath.vector4(1, 0.5, 0, 1)
COLOR_LIGHTBLUE = vmath.vector4(0.5, 1, 1, 1)
COLOR_RED = vmath.vector4(1, 0, 0, 1)
COLOR_GREEN = vmath.vector4(0, 1, 0, 1)
COLOR_BLUE = vmath.vector4(0, 0, 1, 1)
COLOR_YELLOW = vmath.vector4(1, 1, 0, 1)
COLOR_GREY = vmath.vector4(.7, .7, .7, 1)
COLOR_WHITE = vmath.vector4(1, 1, 1, 1)
If it helps, I could write you a very small tool (just a view lines) where you can select a colorbox and get the values back.